Altra Industrial Motion
A L T R A
I N D U S T R I A L
M O T I O N
All Customer Service phone numbers shown in bold Engineered Couplings
Heavy Duty Clutches and Brakes
Asia Pacific Sales Offices
Warner Electric
Ameridrives Couplings
Wichita Clutch
Australia
Electromagnetic Clutches and Brakes
Mill Spindles, Ameriflex, Ameridisc
Pneumatic Clutches and Brakes
New Hartford, CT - USA 1-800-825-6544
Erie, PA - USA 1-814-480-5000
For application assistance: 1-800-825-9050
Gear Couplings
Wichita Falls, TX - USA 1-800-964-3262 Bedford, England +44 (0) 1234 350311
Unit 51/9, Hoyle Avenue Castle Hill, NSW 2154 +61 2 9894 0133 +61 2 9894 0368 (Fax)
St Barthelemy d’Anjou, France +33 (0) 2 41 21 24 24
San Marcos, TX - USA 1-512-353-4000
Precision Electric Coils and Electromagnetic Clutches and Brakes
Bibby Transmissions
Columbia City, IN - USA 1-260-244-6183
Dewsbury, England +44 (0) 1924 460801 Boksburg, South Africa +27 11 918 4270
Matrix International Electromagnetic Clutches and Brakes, Pressure Operated Clutches and Brakes
Brechin, Scotland +44 (0) 1356 602000 New Hartford, CT - USA 1-800-825-6544 Inertia Dynamics Spring Set Brakes; Power On and Wrap Spring Clutch/Brakes
New Hartford, CT - USA 1-800-800-6445 Overrunning Clutches
Formsprag Clutch Overrunning Clutches and Holdbacks
Warren, MI - USA 1-800-348-0881– Press #1 For application assistance: 1-800-348-0881 – Press #2
Marland Clutch Roller Ramp and Sprag Type Overrunning Clutches and Backstops
Burr Ridge, IL - USA 1-800-216-3515 Stieber Clutch Overrunning Clutches and Holdbacks
Heidelberg, Germany +49 (0) 6221 30 47 0
Disc, Gear, Grid Couplings, Overload Clutches
TB Wood’s
www.warnerelectric.com.au
China - Hong Kong
Twiflex Limited
Room 304A, 3rd Floor Join-In Hang Sing Centre 71-75 Container Port Rd. Kwai Chung, Hong Kong +852 2615 9313 +852 2615 9162 (Fax)
Caliper Brakes and Thrusters
Twickenham, England +44 (0) 20 8894 1161 Industrial Clutch
www.warnerelectric.com.hk
Pneumatic and Oil Immersed Clutches and Brakes
China - Shanghai
Waukesha, WI - USA 1-262-547-3357
Shanghai Universal Mansion Suite 703, 168 Yuyuan Road, Shanghai 200040 +86 21 5169-9255 +86 21 6248 5387 (Fax)
Elastomeric Couplings
Chambersburg, PA - USA 1-888-829-6637– Press #5 For application assistance: 1-888-829-6637 – Press #7
General Purpose Disc Couplings
San Marcos, TX - USA 1-512-353-4000 Ameridrives Power Transmission Universal Joints, Drive Shafts, Mill Gear Couplings
Green Bay, WI - USA 1-920-593-2444
Gearing
Boston Gear
www.altramotion.com.cn
Enclosed and Open Gearing, Electrical and Mechanical P.T. Components
China - Taiwan
3rd Fl., No. 35, Lane 32 Kwang-Fu, South Road 10562 Taipei +886 2 2577 8156 +886 2 2570 6358 (Fax)
Charlotte, NC - USA 1-800-825-6544 For application assistance: 1-800-816-5608
www.warnerelectric.com.tw
Nuttall Gear and Delroyd Worm Gear
Singapore
Worm Gear and Helical Speed Reducers
39 Benoi Road Singapore 627725 +65 6487 4464 +65 6487 6674 (Fax)
Niagara Falls, NY - USA 1-716-298-4100
Huco Dynatork
www.warnerelectric.com.sg
Precision Couplings and Air Motors
Belted Drives and Sheaves
Hertford, England +44 (0) 1992 501900 Charlotte, NC - USA 1-800-825-6544
TB Wood’s
Thailand Belted Drives
Chambersburg, PA - USA 1-888-829-6637 – Press #5
Linear Products
For application assistance: 1-888-829-6637 – Press #7
Warner Linear
Engineered Bearing Assemblies
Linear Actuators and Guideways
Belvidere, IL - USA 1-800-825-6544 For application assistance: 1-800-825-9050
178 Soi Anamai Srinakarin Rd., Suanluang Bangkok 10250 +66 2 322 5527 +66 2 320 2380 (Fax) www.warnerelectric.co.th For more information, or to contact authorized agents in Japan, Korea, India, or elsewhere in Asia Pacific, send an email to:
[email protected]
Kilian Manufacturing Engineered Bearing Assemblies
Syracuse, NY - USA 1-315-432-0700
St Barthelemy d’Anjou, France +33 (0) 2 41 21 24 24
www.bostongear.com 701 Carrier Drive Charlotte, NC 28216 - USA 704-588-5610 Fax: 704-588-7181
P-1930-BG
4 /10
Printed in USA
BOSTON GEAR Gears, Bearings, Couplings and Shaft Accessories
Electromagnetic Clutches and Brakes
Rotary Drive Products Gears, Bearings, Couplings and Shaft Accessories
Altra Industrial Motion
Boston Gear Boston Gear is a global supplier of quality power transmission products to most major industrial markets. With unparalleled delivery programs and superior customer service, the power transmission consumer, distributor and OEMs who demand the best, count on Boston Gear. Boston Gear provides an extensive off-the-shelf product offering of more than 20,000 products combined with the ability to custom engineer unique solutions when required. Products are designed to perform in an unlimited array of industrial applications from unit handling to food processing and everything in between including solutions for paper converting, corrugated, mixers, hoists, pumps and steel.
Altra is a leading multinational designer, producer and marketer of a wide range of mechanical power transmission products. We sell our products in over 70 countries throughout the world.
Boston Gear Boston Gear is a leading global supplier of quality power transmission products to most major industrial markets including food processing, packaging machinery, material handling and many others. Along with unparalleled delivery programs and superior customer service, the power transmission consumer, distributor, and OEM who demand the best, count on Boston Gear.
Centric Products Mechanical & Pneumatic Overload Clutches The full family of Centric overload clutches includes Trig-O-Matic™, Trig-O-Matic Lite™, Model H units, pneumatic disconnect models, and VariTorque pneumatic models. Centric centrifugal clutches are also offered. Bore ranges from 1/2" to 4-11/16". Torque ranges from 35 in.lb. to 88,500 in.lb.
Our products are frequently used in critical applications, such as fail-safe brakes for elevators, wheelchairs and forklifts as well as in a wide range of highvolume manufacturing processes, where reliability and accuracy are important for both avoiding costly downtime and enhancing the overall efficiency of manufacturing operations.
See Catalog P-1500-BG
Altra products are marketed under a variety of well recognized and established manufacturing brand names including Warner Electric, Boston Gear, TB Wood’s, and Formsprag Clutch. High Precision Planetary Gearheads The Boston Gear line of servo gearheads has been designed for direct attachment to popular servomotors. In-line and right angle units are offered in a variety of single and double reduction ratios. See Catalog P-1603-BG
Worm, Helical and Bevel Gear Drives Boston Gear’s comprehensive line of enclosed gear drives includes worm, in-line and parallel-shaft helical, miter, and spiral bevel. Flanged and non-flanged models, single and double reduction units, and right 90 drives are available. And with our Reducer Express™ service, we'll ship any of our 15 million different speed reducer combinations, in stock or not, by air within 24 hours - or we'll pay the freight.
bostongear.com
See Catalog P-1485-BG
Check out BostSpec2™, the online product configurator at bostongear.com. Just input your application’s requirements using the drop down menus to identify performance criteria. The right product will power its way up to the top. • Download 2D and 3D CAD formats and dimensional line drawings. • Submit an online RFQ to the local distributor of your choice. P-1930-BG
4 /10
Boston Gear 800-825-6544
225
Table Of Contents
A
B
C
D
E
F
G
Stock Altered and Custom Worm and Worm Gears ...............................................................................................3-5 Selection and Reference Guide...............................................................................................................................6-12 Product Descriptions..............................................................................................................................................13-16 SPUR GEARS Section Contents ................................................................................................................................................17 Pinions and Spur Gears ....................................................................................................................18-27, 37-46 Change Gears ................................................................................................................................................28-32 Stem Pinions .......................................................................................................................................................33 Drawn Pinion Wire ..............................................................................................................................................34 Rack ...............................................................................................................................................................35, 47 Internal Gears................................................................................................................................................36, 48 Selection.........................................................................................................................................................49-62 Gear Gauge Sets.................................................................................................................................................62 HELICAL GEARS Section Contents ................................................................................................................................................63 Helical Gears..................................................................................................................................................64-65 Selection.........................................................................................................................................................66-68 Stock Altered and Custom Helical Gears .......................................................................................................3-5 MITER AND BEVEL GEARS Section Contents ................................................................................................................................................69 Miter Gears ....................................................................................................................................................70-73 Bevel Gears....................................................................................................................................................74-78 Selection.........................................................................................................................................................79-83 Stock Altered and Custom Miter & Bevel Gears............................................................................................3-5 WORMS AND WORM GEARS Section Contents ................................................................................................................................................85 Worms and Worm Gears ..............................................................................................................................86-95 Selection.........................................................................................................................................................96-98 SHAFT ACCESSORIES Selection Contents .............................................................................................................................................99 Shaft Couplings .........................................................................................................................................100-106 Universal Joints .........................................................................................................................................107-113 Shaft Collars, Set Screw and Clamping Collars ....................................................................................114-117 Washers and Bushings .............................................................................................................................118-119 Pulleys, Round Belt...........................................................................................................................................120 Miniature Timing Belt & Pulley Selection................................................................................................121-134 BEARINGS Selection Contents ...........................................................................................................................................135 BOST-BRONZ (Oil-Impregnated Sintered Bronze) .............................................................................136-144 BEAR-N-BRONZ (660 Cast Bronze) .....................................................................................................145-153 Bronze Bearing Emergency Bank ................................................................................................................154 BOStonE F-1 (Glass Filled Teflon) ........................................................................................................155-157 RULON® 641 Bearings ..........................................................................................................................158-159 BOStonE Molded Plastic .......................................................................................................................160-171 BOStonE Molded Nylon .........................................................................................................................172-173 Sleeve Bearing Engineering ..................................................................................................................174-182 Anti-Friction (Ball Bearings) ..................................................................................................................183-197 Self-Aligning (Rod End & Spherical Bearings).....................................................................................198-206 Engineering.............................................................................................................................................207-211 Mounted Bearings..................................................................................................................................212-232 Rolling Element Bearing Engineering ..................................................................................................233-239 CHAINS Section Contents ...........................................................................................................................................241 Roller Chains .............................................................................................................................................242-252 Block Chains .....................................................................................................................................................253 Continued on next page
P-1930-BG
04/10
Boston Gear 800-825-6544
1
Table Of Contents Continued G CHAINS (continued) ...................................................................................................................................................... Leaf (Cable) Chains ..........................................................................................................................................253 Ladder Chains ...................................................................................................................................................254 Miniature Roller Chains....................................................................................................................................255 Chain Pullers/Chain Breaking Tools...............................................................................................................256 H SPROCKETS Section Contents ...........................................................................................................................................257 Roller Chain Drives ................................................................................................................................258-265 Miniature Chain Sprockets ...........................................................................................................................266 Roller Chain Sprockets..........................................................................................................................267-289 Block Chain Sprockets .................................................................................................................................290 Ladder Chain Sprockets........................................................................................................................291-292 Roller Chain Drive Tensioners ..............................................................................................................293-296 Idler Sprockets ..............................................................................................................................................293 I ENGINEERING INFORMATION SPUR GEARS Nomenclature.......................................................................................................................................298-299 Involute Form ...............................................................................................................................................300 Diametral Pitch / Pressure Angle / Tooth Dimensions............................................................................301 Backlash / Undercut / Formulas ................................................................................................................302 Lewis Formula..............................................................................................................................................303 HELICAL GEARS Nomenclature / Helix Angle........................................................................................................................304 Formulas.......................................................................................................................................................305 Thrust Loads................................................................................................................................................306 MITER & BEVEL GEARS Nomenclature ..............................................................................................................................................307 Mounting Distance ......................................................................................................................................308 Tooth Strength / Thrust ..............................................................................................................................309 WORMS & WORM GEARS Hand / Efficiency / Thrust Loads ...............................................................................................................310 Formulas / Self-Locking .............................................................................................................................311 COUPLING / UNIVERSAL JOINTS ..................................................................................................................312 GENERAL INFORMATION How To Figure Horsepower & Torque ......................................................................................................313 Mountings / Alterations / Lubrication .......................................................................................................314 Materials / Styles / Keyways & Setscrews ...............................................................................................315 Sprockets, Sprocket Diameters .........................................................................................................316-318 Horsepower & Torque Capacity Of Shafting ............................................................................................319 Temperature Conversion Table .................................................................................................................320 Equivalent Table ..........................................................................................................................................321 Metric Conversion Chart ............................................................................................................................322 Application Classifications .................................................................................................................323-324 INDEX TO CATALOG NUMBERS .............................................................................................................325-328
2
Boston Gear 800-825-6544
P-1930-BG
04/10
Modified Stock Gearing With thousands of stock gears available, chances are we’ve got just what you’re looking for. If you find a stock gear that’s close to what you need, but not precisely right, that’s not a problem. We can modify most stock gears to meet your requirements and ship it within 24 hours. The full range of modifications we can provide are shown below.
MO
DI
FIE
D
24 HO
UR
ST
OC
K
SHIP
MEN
Face Width Reduced
T
GE
AR
IN
G
Keyway(s) Added Tapped Holes Added (for set screws) Hub Projection Reduced Bore Enlarged Hub Diameter Reduced
With Boston Gear, stock gear modifications are quick and easy. Give us a call at
800-825-6544.
Keyways and bores available in common metric sizes.
Custom Gearing Not every job is alike and not every job requires the same solution. That’s why Boston Gear will configure a custom gear to suit you. Even though we have built our reputation on supplying a breadth of standard products for virtually any industry, we have forged a name for ourselves as makers of quality custom gears. Custom doesn’t have to mean expensive and it doesn’t have to mean that it requires long lead times. Depending on the amount of tooling required and the complexity of the job, your custom gear solution can be delivered in days, not weeks. No matter how small or how large your job is, contact our custom engineering team for a customized quote. To request a quote for a custom gear solution from Boston Gear, simply fill out the “Request For Quotation Form” on page 5, and FAX to 800-387-0130. Or give us a call at 800-816-5608.
P-1930-BG
4/10
Boston Gear 800-825-6544
3
Custom Gearing Capabilities Gear Types Tolerances
• Spur • Helical • Miter & Bevel • Worm & Worm Gear
AGMA Classes AGMA 9
Non-Heat Treated, Spur & Helical Gears only AGMA 8 Heat Treated & Non-Heat Treated, all other gears
Bore Diameter
.0005"
.0010"
Ground O.D.
.0005"
.0010"
Turned O.D.
.0020"
.0020"
Bore Length
.0020"
.0020"
Keyway Width
.0020"
.0020"
Keyway Depth
.0100"
.0100"
≤ 2" Diameter
≥ 2" Diameter
Perpendicularity
.0010"
.0010"
Parallelism
.0010"
.0010"
Circular Runout
.0010"
.0010"
Features Diametral Pitch
Pitch Diameter
Face Max.
Spur
64DP-3DP
.250"-36.000"
5.000"
Helical
64DP-3DP
.337"-24.000"
5.000"
64DP-3DP
1.000"-24.000"
Bevel & Miter
64DP-3DP
.500"-24.000"
3.000"
Worm
48DP-3DP
.333"-4.000"
12.000"
Worm Gear
48DP-3DP
.420"-24.000"
5.000"
Shaved Gear
24DP-3DP
1.000"-24.000"
5.000"
Splines
2B Thread
Geometric Dimensioning
Capacities
Internal Spur
≥ 2" Diameter
Tapped Holes
Note: Worm & Worm Gears do not have AGMA Class listings, however Boston Gear manufacturing tolerances relate to AGMA 8.
Gear Type
≤ 2" Diameter
Features
5.000"
Consult Engineering
Module
Diametral Pitch
Circular Pitch (in.)
.4 .5 .6 .8 1 1.25 1.5 2 2.5 3 4 5 6
63.500 50.800 42.333 31.750 25.400 20.320 16.933 12.700 10.160 8.467 6.350 5.080 4.233
.0495 .0618 .0742 .0989 .1237 .1546 .1855 .2474 .3092 .3711 .4947 .6184 .7422
8
3.175
.9895
Note: Circular Pitch (.0491”-1.0472”) or Module Pitch (.4mm-8mm) within the Diametral Pitch Limits are optional (refer to page 302).
Flatness
.0010"
.0010"
Concentricity
.0005"
.0010"
Backlash Refer to Engineering Information found on pages 301 and 309. Refer to engineering for backlash related to helical and worm gearing.
Lot Sizes 25 pcs
Minimum Quantity on 6" OD and less
Finishes 63 RMS Minimum on gear teeth 32 RMS Minimum on Bores, Shaved Gear Teeth, Ground Worms, and Machined Surfaces
Material Description
Designation
Low Carbon Steels
11L17, 12L14, 12L15
Medium Carbon Steels
11L41, 1045
Low Carbon Alloy Steels
86(L)20* (*86L20 or 8620)
Medium Carbon Alloy Steels
41(L)30, 41(L)40, 41(L)50
Preheat Treated Steels
4140, 4150
Stainless Steels
17-4PH, 303, 304
Cast Iron
Grade 25, Grade 30
Brass
Free Cutting, Half Hard
Bronze Non-Metallic
4
Boston Gear 800-825-6544
Phenolic (NEMA“C”), Delron, Nylon
P-1930-BG
4/10
Custom Gearing “Request For Quotation” Form Company Name
Date
Address
Ref.
City/State
Zip
Tel. No.
Quantity Req.
Fax No.
P.O. No.
Contact Name email Gear Type
Spur
Helical
Miter
Bevel
Worm
Worm Gear
No. of Teeth Pitch (DP, CP MOD) Pressure Angle Helix Angle Hand (LH, RH) Material Face Width Length Through Bore Hub Diameter Hub Projection Bore Diameter Keyway Setscrew(s) Teeth in Mating Gear Center Distance Mounting Distance No. of Starts (Thread) Outside Diameter Heat Treat — Yes/No Depth of Hardness
Special Information
FAX to 800-387-0130. Or give us a call at 800-816-5608.
P-1930-BG
4/10
Boston Gear 800-825-6544
5
Modified Stock Gearing With thousands of stock gears available, chances are we’ve got just what you’re looking for. If you find a stock gear that’s close to what you need, but not precisely right, that’s not a problem. We can modify most stock gears to meet your requirements and ship it within 24 hours. The full range of modifications we can provide are shown below.
MO
DI
FIE
D
24 HO
UR
ST
OC
K
SHIP
MEN
Face Width Reduced
T
GE
AR
IN
G
Keyway(s) Added Tapped Holes Added (for set screws) Hub Projection Reduced Bore Enlarged Hub Diameter Reduced
With Boston Gear, stock gear modifications are quick and easy. Give us a call at
800-825-6544.
Keyways and bores available in common metric sizes.
Custom Gearing Not every job is alike and not every job requires the same solution. That’s why Boston Gear will configure a custom gear to suit you. Even though we have built our reputation on supplying a breadth of standard products for virtually any industry, we have forged a name for ourselves as makers of quality custom gears. Custom doesn’t have to mean expensive and it doesn’t have to mean that it requires long lead times. Depending on the amount of tooling required and the complexity of the job, your custom gear solution can be delivered in days, not weeks. No matter how small or how large your job is, contact our custom engineering team for a customized quote. To request a quote for a custom gear solution from Boston Gear, simply fill out the “Request For Quotation Form” on page 5, and FAX to 800-387-0130. Or give us a call at 800-816-5608.
P-1930-BG
04/10
Boston Gear 800-825-6544
3
Custom Gearing Capabilities Gear Types Tolerances
• Spur • Helical • Miter & Bevel • Worm & Worm Gear
AGMA Classes Non-Heat Treated, Spur & Helical Gears only AGMA 8 Heat Treated & Non-Heat Treated, all other gears AGMA 9
Bore Diameter
.0005"
.0010"
Ground O.D.
.0005"
.0010"
Turned O.D.
.0020"
.0020"
Bore Length
.0020"
.0020"
Keyway Width
.0020"
.0020"
Keyway Depth
.0100"
.0100"
≤ 2" Diameter
≥ 2" Diameter
Perpendicularity
.0010"
.0010"
Parallelism
.0010"
.0010"
Circular Runout
.0010"
.0010"
Features Diametral Pitch
Pitch Diameter
Face Max.
Spur
64DP-3DP
.250"-36.000"
5.000"
Helical
64DP-3DP
.337"-24.000"
5.000"
64DP-3DP
1.000"-24.000"
Bevel & Miter
64DP-3DP
.500"-24.000"
3.000"
Worm
48DP-3DP
.333"-4.000"
12.000"
Worm Gear
48DP-3DP
.420"-24.000"
5.000"
Shaved Gear
24DP-3DP
1.000"-24.000"
5.000"
Splines
2B Thread
Geometric Dimensioning
Capacities
Internal Spur
≥ 2" Diameter
Tapped Holes
Note: Worm & Worm Gears do not have AGMA Class listings, however Boston Gear manufacturing tolerances relate to AGMA 8.
Gear Type
≤ 2" Diameter
Features
5.000"
Consult Engineering
Module
Diametral Pitch
Circular Pitch (in.)
.4 .5 .6 .8 1 1.25 1.5 2 2.5 3 4 5 6
63.500 50.800 42.333 31.750 25.400 20.320 16.933 12.700 10.160 8.467 6.350 5.080 4.233
.0495 .0618 .0742 .0989 .1237 .1546 .1855 .2474 .3092 .3711 .4947 .6184 .7422
8
3.175
.9895
Note: Circular Pitch (.0491”-1.0472”) or Module Pitch (.4mm-8mm) within the Diametral Pitch Limits are optional (refer to page 302).
Flatness
.0010"
.0010"
Concentricity
.0005"
.0010"
Backlash Refer to Engineering Information found on pages 301 and 309. Refer to engineering for backlash related to helical and worm gearing.
Lot Sizes 25 pcs
Minimum Quantity on 6" OD and less
Finishes 63 RMS Minimum on gear teeth 32 RMS Minimum on Bores, Shaved Gear Teeth, Ground Worms, and Machined Surfaces
Material Description
Designation
Low Carbon Steels
11L17, 12L14, 12L15
Medium Carbon Steels
11L41, 1045
Low Carbon Alloy Steels
86(L)20* (*86L20 or 8620)
Medium Carbon Alloy Steels
41(L)30, 41(L)40, 41(L)50
Preheat Treated Steels
4140, 4150
Stainless Steels
17-4PH, 303, 304
Cast Iron
Grade 25, Grade 30
Brass
Free Cutting, Half Hard
Bronze Non-Metallic
4
Boston Gear 800-825-6544
Phenolic (NEMA“C”), Delron, Nylon
P-1930-BG
04/10
Custom Gearing “Request For Quotation” Form Company Name
Date
Address
Ref.
City/State
Zip
Tel. No.
Quantity Req.
Fax No.
P.O. No.
Contact Name email Gear Type
Spur
Helical
Miter
Bevel
Worm
Worm Gear
No. of Teeth Pitch (DP, CP MOD) Pressure Angle Helix Angle Hand (LH, RH) Material Face Width Length Through Bore Hub Diameter Hub Projection Bore Diameter Keyway Setscrew(s) Teeth in Mating Gear Center Distance Mounting Distance No. of Starts (Thread) Outside Diameter Heat Treat — Yes/No Depth of Hardness
Special Information
FAX to 800-387-0130. Or give us a call at 800-816-5608.
P-1930-BG
04/10
Boston Gear 800-825-6544
5
Gear Selection Stock Gears
Spur Gears
Description
Miter and Bevel Gears
Worms and Worm Gears
6
Boston Gear 800-825-6544
Pressure Angle (PA)
Material
Pinions and Gears
Parallel Shafts
14-1/2° 20° 14-1/2° 20°
Brass Brass Steel Delrin
Pinions and Gears
Parallel Shafts
14-1/2° 14-1/2° 20°
Non-Metallic Steel, Iron Steel, Iron
Change Gears
Parallel Shafts
14-1/2°
Steel, Iron
Stem Pinions
Parallel Shafts
14-1/2°
Steel
Drawn Pinion Wire
Parallel Shafts
Brass 14-1/2°
Steel
Use with Spur Gears
14-1/2° 14-1/2° 20°
Nylon Steel Steel
Internal Gears
Parallel Shafts
14-1/2° 20°
Brass Brass
Helical Gears
Parallel and 90° Non-Intersecting Shafts
14-1/2°
Steel Bronze
Straight Miter Gears
90° Intersecting Shafts
20°
Nylon Brass Steel Iron
Spiral Miter Gears
90° Intersecting Shafts
20°
Steel
Straight Bevel Gears
90° Intersecting Shafts
20°
Brass Steel Iron
Spiral Bevel Gears
90° Intersecting Shafts
20°
Steel
Rack
Helical Gears
Application
(PA) 90° Non-Intersecting Shafts 14-1/2°
Thread
Worm
Gear
Worms/ Worm Gears
Single
Acetal Nylon
Acetal Minlon Bronze
Worms/ Worm Gears
90° 14-1/2° Non-Intersecting 20° Shafts 25°
Single Double Quad
Steel
Bronze
Worms/ Worm Gears
90° 14-1/2° Non-Intersecting 20° Shafts 25°
Single Double Quad
Steel
Iron
P-1930-BG
04/10
Reference Guide Gear Catalog Reference Pages Horsepower Catalog Selection and Torque Number Procedure Ratings Selection
Diametrical Pitch
Pitch Diameter
Face Width
48DP – 16DP 64DP – 24DP 32DP – 24DP 48DP – 24DP
.208" – 5.000" .250" – 6.000" .500" – 6.000" .375" – 2.500"
.062" – .313" .125" – .250" .187" – .250" .125" – .250"
49 49 49 49
50 – 52 – 50 –
18 – 21 37 – 42 19 – 20 37 – 42
16DP – 8DP 20DP – 3DP 20DP – 5DP
1.000" – 3.500" .750" – 36.000" .600" – 36.000"
.500" – 1.250" .500" – 3.000" .500" – 2.500"
49 49 49
52 – 55 51 – 57 58 – 62
22 – 24 20 – 27 42 – 46
20DP – 8DP
1.000" – 12.500"
.375" – 1.250"
49
51 – 55
28 – 32
20DP – 6DP
.287" – 1.750"
1.125" – 3.000"
49
51 – 56
33
48DP – 24DP 48DP – 24DP
.125" – .667" .125" – .667"
48" Lengths 48" Lengths
49 49
50 50
34 34
48DP – 24DP 48DP – 3DP 20DP – 4DP
.104" – .208" .104" – 1.167" .450" – 1.750"
.125" – .250" .125" – 3.000" .500" – 3.500"
49 49 49
50 50 – 57 58 – 62
35 35 47
48DP – 16DP 64DP – 24DP
1.000" – 6.000" 1.000" – 6.000"
.125" – .312" .125" – .250"
49 49
50 –
36 48
24TDP – 6TDP 8TDP – 6TDP
.333" – 6.000" 1.000" – 6.000"
.250" – 1.250" .750" – 1.250"
66 66
67 – 68 68
64 – 65 65
48DP – 16DP 48DP – 24DP 48DP – 4DP 8DP – 4DP
.312" – 2.000" .312" – 1.500" .375" – 7.000" 3.500" – 8.000"
.070" – .390" .080" – .230" .080" – 1.430" .750" – 1.333"
79 79 79 79
80 80 80 – 81 80 – 81
70 – 71 70 70 – 72 72
18DP – 5DP
1.000" – 5.000"
.220" – 1.150"
79
83
73
48DP – 24DP 20DP – 6DP 16DP – 4DP
.250" – 2.000" .500" – 6.000" 1.000" – 9.000"
.090" – .260" .180" – 1.070" .420" – 1.400"
79 79 79
82 82 82
74 74 – 77 75 – 77
30DP – 8DP
.430" – 4.250"
.140" –.710"
79
83
78
96
–
86 – 88
Worm
Gear
Worm
Gear
.333" to 1.500"
.417" to 4.167"
.562" to .812"
.156" to .219"
48DP – 4DP
.333" to 3.000"
.417" to 6.000"
.562" to 5.250"
.156" to 1.500"
96
97 – 98
86 – 94
16DP – 3DP
.625" to 4.000"
1.250" to 18.000"
1.000" to 5.250"
.312" to 2.000"
96
97 – 98
89 – 95
48DP – 32DP 24DP – 32DP 48DP – 24DP
P-1930-BG
04/10
Tooth Gauge
Boston Gear 800-825-6544
7
Product Selection / Reference Guide
BOST-BRONZ® OIL IMPREGNATED SINTERED BRONZE
PLAIN CYLINDRICAL
FLANGED TYPE
THRUST TYPE
Pages 138–140
Pages 141–142
Page 143
PLATE STOCK
CORED BARS
SOLID BARS
Page 143 PLAIN CYLINDRICAL
Page 144 CORED BARS
Page 144 SOLID BARS
Pages 146–150
Pages 151–153
BEAR-N-BRONZ® 660 CAST BRONZE Page 153
BOST-BRONZ & BEAR-N-BRONZ
PLAIN CYLINDRICAL
BOSTONE® F-1 GLASS FILLED TEFLON
BRONZE EMERGENCY BEARING BANKS Page 154
Page 156
FLANGED
THRUST TYPE
SOLID BARS (EXTRUDED)
Page 156
Page 157
Page 157
BOStonE® F-1 GLASS FILLED TEFLON RULON® 641 BEARINGS
PLAIN CYLINDRICAL
BOSTONE® MOLDED PLASTIC
Rulon® Pages 158–159
BOStonE® MOLDED PLASTIC
8
FLANGED
Page 161
Page 161
ROLL END FOR TUBING & STANDARD PIPE
EXTRA LENGTH BLIND BORE INSERTS
ROLL END ADAPTER FOR HEX SHAFT
GUIDE ROLL
Pages 162–168 ROLLERS
Page 169 SHAFT CLIP
Page 169 STUB SHAFT FOR ROLLERS
Page 170
Page 170
Page 171
Page 171
Boston Gear 800-825-6544
P-1930-BG
04/10
Product Selection / Reference Guide PLAIN CYLINDRICAL
FLANGED
THRUST TYPE
CABLE PULLEYS
Page 172
Page 172
Page 173
Page 173
1600 SERIES
7500 SERIES
7600 SERIES
6900 SERIES
Pages 185–186
Page 187
Page 188
Page 189
3000 SERIES
400F SERIES FLANGED
BOStonE® MOLDED NYLON
RADIAL BALL BEARINGS
Pages 190–191
Page 192
GROUND, UNBANDED
600 SERIES
THRUST BALL BEARINGS Page 193
Page 194
2000 SERIES
2100 SERIES
BALL BEARING WHEELS
BALL BEARING SHEAVES
ROD END BEARINGS
P-1930-BG
04/10
2200 SERIES
Page 195
Page 196
KF FEMALE SERIES
HM-C SERIES HF-C FEMALE SERIES
CMHD MALE SERIES CFHD FEMALE SERIES
HM MALE SERIES HF FEMALE SERIES
Page 200
Page 201
Page 198
Page 199
HME MALE SERIES HFE FEMALE SERIES
HMX MALE SERIES HFX FEMALE SERIES
Page 202
Page 203
Page 197
Boston Gear 800-825-6544
9
Product Selection / Reference Guide LHA-LHB-LHSS SERIES
LHSSE-LHSSVV SERIES
LS SERIES
Page 206
SPHERICAL BEARINGS
REPLACEMENT BEARINGS & LOCKING COLLAR SERIES
PILLOW BLOCKS
FLANGED UNITS
Page 204
Page 205
L, H, F, T, A SERIES
PS/XL-S-MB SERIES
Page 213
Page 214
PPB SERIES
PS SERIES
XL SERIES
L-SERIES H-SERIES
Page 215
Page 216
Page 217
Pages 218–219
SL/SH SERIES
MB SERIES
Pages 220–221
Page 222
PS2/PS3 SERIES
XL2/XL3 SERIES
F SERIES T-SERIES
SF/ST SERIES
Pages 225–226
Pages 227–228
Page 223
Page 224
MBF SERIES
MBP SERIES
Page 229
Page 230
A SERIES
SHAFT SUPPORTS
TAKE-UP FRAMES Page 231
10
TU SERIES
Boston Gear 800-825-6544
Page 232
P-1930-BG
04/10
Product Selection / Reference Guide
COUPLINGS
INSERT (3 JAW)
SPIDER RING
SHEAR
FC Type – Pages 100-101
BF Type – Page 102
BG Type – Page 103
CLAMP
MULTI-JAW
RIGID
SLEEVE
SCC Type – Page 104
FA Type – Page 105
CR Type – Page 105
FCP Type – Page 106
PIN & BLOCK
FORGED
MOLDED
MOLDED WITH SLIDE EXTENSION
J Type – Pages 107–108
UJN Type – Pages 109–111
JP Type – Page 112
JPE Type – Page 113
UNIVERSAL JOINTS
SETSCREW
CLAMPING–THREADED
CLAMPING – 1 PIECE
CLAMPING – 2 PIECE
SC Type – Page 114
CSC Type – Page 115
CS Type – Page 116
2CS Type – Page 117
COLLARS
HARDENED STEEL WASHERS
WASHERS
SOFT STEEL BUSHINGS
BUSHINGS Page 118
Page 119
GROOVED
PULLEYS
Page 120 TIMING BELTS
PULLEYS
Pages 121-124 & 130
Pages 125–129 & 131–134
MINIATURE TIMING BELTS & PULLEYS
P-1930-BG
04/10
Boston Gear 800-825-6544
11
Product Selection / Reference Guide
ROLLER, BLOCK & LEAF CHAINS
MULTIPLE WIDTHS ANSI STANDARD
TRANSMISSION SERIES
CONVEYOR SERIES
HEAVY SERIES
Page 243–244
Page 245
Page 245
Page 245
ATTACHMENTS
HOLLOW PIN
BLOCK
LEAF (CABLE)
Page 251 LADDER
Page 252 MINIATURE ROLLER CHAIN
Page 253 CHAIN PULLERS & CHAIN BREAKING TOOLS
Page 253
Page 254
Page 255
Page 256
PLASTIC & STAINLESS STEEL
ROLLER CHAIN
BLOCK CHAIN
LADDER CHAIN
SPROCKETS
Page 266 Pages 267–289 Page 290 Pages 291–292 SCREW/SPRING ADJUSTABLE SHAFT MOUNTED DRIVE TENSIONS TYPE LG
TYPE BG
Page 294
Pages 294-295
TYPE HG &UG
DRIVE TENSIONERS
12
Boston Gear 800-825-6544
Page 296
P-1930-BG
04/10
Boston Gear Spur Gears ■ ■
■
■
■
Parallel Shaft Applications Reliability from Steel, Cast Iron and Brass More Cost Effective, Quieter Running and Corrosion-Resistant Operation from Non-Metallic Options Higher Load Carrying Capacity with 20° PA (Pressure Angle) Higher Contact Ratio for a Smoother, Quieter Operation with 14-1/2° PA
Selections From Stock • Pinions and Gears (Steel, Cast Iron, Brass, Non-Metallic) • Change Gears (Steel or Cast Iron) • Stem Pinions (Steel) • Drawn Pinion Wire (Brass, Steel) • Rack (Steel, Nylon) • Internal (Brass) • Diametral Pitch 64 DP to 3 DP • Pitch Diameter .208" to 36.000" • Diametral Pitch System Standardized on Stock Gears • 14-1/2° and 20° Pressure Angles Boston spur gears are designed to transmit motion and power between parallel shafts. Configurations include spur, rack, pinion wire, stem pinions and internal gears; most with a selection of bores, keyways and set screws. Fine-pitch gears are available in plastic, brass, stainless steel and steel. Heavier pitch spurs are available in steel and cast iron. Styles include plain, web, web with lightening holes or spoked. Change gears have consecutive numbers of teeth for a variety of ratios. Boston Gear manufactures both 14-1/2° and 20°PA, involute, full depth system gears. While 20°PA is generally recognized as having higher load carrying capacity, 14-1/2°PA gears have extensive use. The lower Pressure Angle results in less change in backlash due to center distance variation and concentricity errors. It also provides a higher contact ratio and is consequently a smoother, quieter operation provided that the undercut of the teeth is not present.
P-1930-BG
04/10
Boston Gear 800-825-6544
13
Boston Gear Helical Gears ■
■ ■ ■ ■
Parallel and 90° Non-Intersecting Shaft Applications Improved Tooth Strength Greater Load Carrying Capacity Increased Contact Ratio Smoother Operating Characteristics
Selections From Stock • Helicals, 45° Helix Angle • Transverse Diametral Pitch (TDP) System • Hardened Steel (24 TDP – 6 TDP) • Bronze (8 TDP – 6 TDP) • Pitch Diameter .333" to 6.000" • 14-1/2° Pressure Angle
Boston helical gears are stocked both right and left hand, made with a 45° helix angle. They are designed to transmit motion and power between non-intersecting shafts which are positioned either parallel (opposing hand) or at 90° to each other (same hand). Because these gears are top-hobbed, there is extremely close concentricity between the pitch diameter and the outside diameter. Helical gears offer additional benefits relative to Spur Gears, those being: – Improved tooth strength due to the elongated helical wrap-around. – Increased contact ratio due to the axial tooth overlap. – Helical Gears tend to have greater load carrying capacity than Spur Gears of similar size. – Because of the above, smoother operating characteristics are apparent. All Boston Helicals are cut to the Transverse Diametral Pitch System, resulting in a higher Normal Diametral Pitch Number.
14
Boston Gear 800-825-6544
P-1930-BG
04/10
Boston Gear Miter and Bevel Gears ■ ■
■
■ ■ ■
90° Intersecting Shaft Applications Coniflex® Tooth Form for Increased Life and Smoother, Quieter Operation Spiral Miter and Bevel for Higher Speed, Greater Torque Load, and Quieter Operating Applications Miter Gears for 1:1 Ratio Applications Bevel Gears for 1.5:1 to 6:1 Ratio Applications Soft Bores for Customized Alterations
Selections from Stock • Straight Miter Gears – Nylon (48 DP – 16 DP) – Brass (48 DP – 24 DP) – Steel (48 DP – 4 DP) – Iron (8 DP – 4 DP) • Spiral Miter Gears (35° Spiral Angle) – Steel (18 DP – 5 DP) • Straight Bevel Gears – Brass (48 DP – 24 DP) – Steel (20 DP – 6 DP) – Iron (16 DP – 4 DP) • Spiral Bevel Gears (35° Spiral Angle) – Steel (30 DP – 8 DP) • Diametral Pitch – 48 DP to 4 DP • Pitch Diameter – 0.250" to 9.000" • 20° Pressure Angle • Hardened or Unhardened Teeth (Steel) • Made in Accordance with AGMA Specifications for the Basic Tooth Form Boston miter and bevel gears are designed for transmission of motion and power between intersecting shafts positioned at a right angle. Straight tooth miter and bevel gears are cut with a generated tooth form having a localized lengthwise tooth bearings known as the “Coniflex”® tooth form. The superiority of these gears over straight bevels with full length tooth bearing lies in the control of tooth contact. The localization of contact permits minor adjustment of the gears in assembly and allows for some displacement due to deflection under operating loads, without concentration of the load on the end of the tooth. This results in increased life and quieter operation. Spiral tooth form miter and bevel gears are suited for higher speed and larger torque applications. ®Registered
P-1930-BG
trademark of The Gleason Works.
04/10
Boston Gear 800-825-6544
15
Boston Gear Worms and Worm Gears ■ ■ ■ ■ ■
■
90° Non-Intersecting Shaft Applications Smoothest, Quietest Form of Gearing High Ratio Speed Reduction Minimal Space Requirements Resistance to Back Driving with Some Ratios Increased Efficiency with Lower Ratios
Selections from Stock • Worms – Acetal (48 DP – 24 DP) – Steel (48 DP – 3 DP) • Worm Gears – Acetal (48 DP – 24 DP) – Bronze (48 DP – 4 DP) – Cast Iron (16 DP – 3 DP) • Pressure Angle – 14-1/2°, 20°, 25° • Thread – Single, Double, Quadruple • Diametral Pitch – 48 DP to 3 DP • Center Distances – 0.375" to 11.000"
Boston Gear worms and worm gears provide an effective answer for such power transmission applications as high-ratio speed reduction, limited space, right-angle shafts and non-intersecting shafts. When properly applied, they are the smoothest and quietest form of gearing. Steel worms and cast iron or bronze worm gears having throated teeth are available in single or multiple threads, 48 to 3 diametral pitch or up to 85" pitch diameter. Acetal worms and worm gears are available in 48, 32 and 24 diametral pitches. The efficiency of a worm gear drive depends on the lead angle and number of starts on the worm. The angle generally decreases with increasing ratio and worm pitch diameter. For increased efficiency the ratio should be kept low.
16
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Section Contents
A
14-1/2° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS Spur Gears ................................................................................................................................. 18-27 Change Gears ............................................................................................................................. 28-32 Stem Pinions..................................................................................................................................... 33 Drawn Pinion Wire ........................................................................................................................... 34 Rack .................................................................................................................................................. 35 Internal Gears................................................................................................................................... 36 20° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS Spur Gears .................................................................................................................................. 37-46 Rack .................................................................................................................................................. 47 Internal Gears................................................................................................................................... 48 Selection Procedure................................................................................................................................. 49 Horsepower & Torque Ratings .......................................................................................................... 50-62 Gear Gauges ............................................................................................................................................. 62 Stock Altered/Custom Spur Gears........................................................................................................ 3-5 Spur Gear Engineering Information .............................................................................................. 298-303
P-1930-BG
04/10
Boston Gear 800-825-6544
17
Spur Gears 48 and 32 Diametral Pitch (Brass) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Hub Pitch Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
.208 .250 .292 .312 .333 .375 .417 .458 .500 .542 .667 .750 .833 .917 1.000 1.125 1.250 1.375 1.500 1.750 2.000 2.083 2.500 3.000 4.000
.0935
–
BRASS –
.125
–
–
.1875
–
–
.250
.50
.25
.3125
.62
.31
32 STANDARD TOLERANCES
48 D.P.
TOLERANCE ±.0005
32 D.P.
A
D
G127 G129 G130 G131 G132 G133 G134 G135 G136 G137 G138 G139 G140 G141 G142 G143 G144 G145 G146 G147 G148 G154 G149 G150 G151
09322 09324 09326 09328 09330 09332 09334 09336 09338 09340 09342 09344 09346 09348 09350 09352 09354 09356 09358 09360 09362 09364 09366 09368 09370
Face = .062" Outside Dia. = Pitch Dia. + .062"
DIAMETRAL PITCH DIMENSION BORE All
Without Keyway or Setscrew Catalog Item Number Code
Face = .125" Outside Dia. = Pitch Dia. + .042" Overall Length = .125" + Hub Proj.
48
10 12 14 15 16 18 20 22 24 26 32 36 40 44 48 54 60 66 72 84 96 100 120 144 192
Style See Page 315
BRASS 10 14 16 20 24 28 32 40 48 64 80 96 112 128
.312 .438 .500 .625 .750 .875 1.000 1.250 1.500 2.000 2.500 3.000 3.500 4.000
8 10 12 14 15 16 18 20 22 24 26 28 30 32 36 40 44 48 52 56
.250 .312 .375 .438 .469 .500 .562 .625 .688 .750 .812 .875 .938 1.000 1.125 1.250 1.375 1.500 1.625 1.750
.125
–
–
.1875
–
–
.250
–
–
.3125
–
–
.375
–
–
A
G96 G98 G99 G101 G102 G103 G104 G105 G106 G110 G111 G112 G113 G114
09234 09238 09240 09244 09246 09248 09250 09252 09254 09256 09258 09260 09262 09264
G159 G161 G163 G165 G166 G167 G168 G169 G170 G171 G172 G173 G174 G175 G176 G177 G178 G179 G180 G181
09266 09268 09270 09272 09274 09276 09278 09280 09282 09284 09286 09288 09290 09292 09294 09296 09298 09300 09302 09304
Face = .188"
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
18
Boston Gear 800-825-6544
.125
–
–
.1875
–
–
.250
–
–
.3125
–
–
A
P-1930-BG
04/10
Spur Gears 32 and 24 Diametral Pitch (Brass & Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Hub Pitch Dia.
Bore
Dia.
Proj.
Style Without Keyway or Setscrew See Page Catalog Item 315 Number Code
DIAMETRAL PITCH 2.000 2.250 2.500 3.000 3.500 4.000
16 20 22 24 28 32 40 48 56 64 80 96 16 18 20 22 24 26 28 30 32 40 48 56 64 80 96 128 160 192
.500 .625 .688 .750 .875 1.000 1.250 1.500 1.750 2.000 2.500 3.000 .500 .562 .625 .688 .750 .812 .875 .938 1.000 1.250 1.500 1.750 2.000 2.500 3.000 4.000 5.000 6.000
.25 .3125
A
Face = .188" Outside Dia. = Pitch Dia. + .062" Overall Length = .187" + Hub Proj.
32
64 72 80 96 112 128
With Setscrew Catalog Item Number Code
BRASS B C
.62 .31
D
.75
G182 G183 G184 G185 G186 G187
09306 09308 09310 09312 09314 09316
– – – – – –
– – – – – –
STEEL .1875
–
–
.250
–
–
.3125 .375 .3125
– –
– –
.375
–
–
.1875
.39 .45 .52 .58 .64 .70 .75 .75 .75
.250
.3125
.88
.375
.31 .31
A
.31 .38 .38
1.00
.38
1.12 1.25 1.88 2.12 2.12
.38 .50 .50 .50 .50
24
DIAMETRAL PITCH
S3216 09572 – – S3220 09574 – – S3222 09576 – – S3224 09578 – – S3228 09580 – – S3232 09582 – – S3240 09584 – – S3248 09586 – – S3256 09588 – – S3264 09590 – – S3280 09592 – – S3296 09594 – – – – H3216 09536 – – H3218 09538 – – H3220 09540 – – H3222 09542 – – H3224 09544 – – H3226 09546 – – H3228 09548 – – H3230 09550 – – H3232 09552 – – H3240 09554 – – H3248 09556 – – H3256 09558 – – H3264 09560 – – H3280 09562 – – H3296 09564 – – H32128 09566 – – H32160 09568 – – H32192 09570 Face = .250" Outside Dia. = Pitch Dia. + .083" Overall Length = .250" + Hub Proj.
HUB PROJ.
FACE
PITCH DIA.
BORE
HUB DIA.
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
32 D.P.
TOLERANCE ±.0005
24 D.P.
BRASS 12 16 18 24 30 36 42 48 54 60 66 72 84 96 120 144
P-1930-BG
.500 .667 .750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.500 4.000 5.000 6.000
04/10
.38 .50 .50
.25
.62
.25
.62
.25
B
.3125
.69
.31
C
.375
.75 .75 .75 .88 .88
.31 .31 .31 .38 .38
D
.1875 .250
A
G254 G256 G257 G258 G259 G261 G263 G264 G265 G266 G267 G268 G269 G270 G272 G274
09202 09204 09206 09208 09210 09212 09214 09216 09218 09220 09222 09224 09226 09228 09230 09232
– – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – –
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 50 Lubrication — 314 Materials — 315 Selection Procedure — 49
Boston Gear 800-825-6544
19
Spur Gears 24 and 20 Diametral Pitch (Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs)
No. of Teeth
A
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub Pitch Dia.
Bore
Dia.
With Keyway & Setscrew† Catalog Item Number Code
Face = .250" Outside Dia. = Pitch Dia. + .083" Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH STEEL
FACE
HUB PROJ. KEYWAY
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
12 15 16 18 21 24 30 36 42 48 60 72 12 14 15 16 18 20 21 24 30 36 42 48 60 72 96 120 144
.500 .625 .667 .750 .875 1.000 1.250 1.500 1.750 2.000 2.500 3.000 .500 .583 .625 .667 .750 .833 .875 1.000 1.250 1.500 1.750 2.000 2.500 3.000 4.000 5.000 6.000
.375
– – – – –
– – – – –
.500
–
–
.250 .3125
.250 .3125
.375
.500
.36 .46 .50 .54 .62 .70 .74 .87 1.00 1.12 1.12 1.25 1.25 1.38 2.00 2.25 2.25
.31
A
.31 .31
.38
.50
20
DIAMETRAL PITCH
S2412 09630 – – S2415 09632 – – S2416 09634 – – S2418 09636 – – S2421 09638 – – S2424 09640 – – S2430 09642 – – S2436 09644 – – S2442 09646 – – S2448 09648 – – S2460 09650 – – S2472 09652 – – – – H2412† 09596 – – H2414† 09598 – – H2415‡ 09600 – – H2416 09602 – – H2418 09604 – – H2420 09606 – – H2421 09608 – – H2424 09610 – – H2430 09612 – – H2436 09614 – – H2442 09616 – – H2448 09618 – – H2460 09620 – – H2472 09622 – – H2496 09624 – – H24120 09626 – – H24144 09628 Face = .375" Outside Dia. = Pitch Dia. + .100" Overall Length = .375" + Hub Proj.
STEEL 11 12 13 14 15 16 18
.600* .600 .650 .700 .750 .800 .900
20
1.000
22
1.100
24
1.200
25
1.250
28
1.400
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
30
1.500
†H2412 & H2414 have #35 (.110) drilled hole through one wall, no keyway.
32
1.600
35
1.750
36
1.800
40
2.000
48 50 60 64
2.400 2.500 3.000 3.200
24 D.P.
20 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 50, 51 Lubrication — 314 Materials — 315 Selection Procedure — 49
‡H2415-H24144 has one setscrew, no keyway. **NA11B-5/16"-NA14B-5/16 bore has #35 (.110) drilled hole through one wall, no keyway. ††3/8" & 1/2" bores have one setscrew, no keyway. NA40-5/8" & NA40-3/4" bores have standard keyway at 90° to setscrew. See Page 315.
20
Boston Gear 800-825-6544
.3125
.375 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .375 .500 .625 .750 .375
.46 .46 .50 .56 .60 .66 .74
.38
.38
.84
.38
.82
.38
.92
.38
.97
.38
1.12
.38
1.22
.38
1.32
.50
1.47
.50
1.52
.50
1.72
.50
1.33 1.42 1.92 2.12
.50
A
NA11B NA12B NA13B NA14B NA15B NA16B NA18B NA20B – NA22B – NA24 – NA25B – NA28B – NA30B – NA32 – NA35 – NA36 – NA40 – – – NA48A NA50A NA60A NA64A
09662 09664 09666 09668 09670 09672 09674 09676 – 09678 – 09680 – 09682 – 09684 – 09686 – 09688 – 09690 – 09692 – 09694 – – – 10208 10210 10212 10214
NA11B-5/16** 46000 NA12B-5/16** 46001 NA13B-5/16** 46002 NA14B-5/16** 46003 NA15B-3/8†† 46004 NA16B-3/8†† 46005 NA18B-3/8†† 46006 NA20B-3/8†† 46007 NA20B-1/2†† 46008 NA22B-3/8†† 46009 NA22B-1/2†† 46010 NA24-3/8†† 46011 NA24-1/2†† 46012 NA25B-3/8†† 46013 NA25B-1/2†† 46014 NA28B-3/8†† 46015 NA28B-1/2†† 46016 NA30B-3/8†† 46017 NA30B-1/2†† 46018 NA32-3/8†† 46019 NA32-1/2†† 46020 NA35-3/8†† 46021 NA35-1/2†† 46022 NA36-3/8†† 46023 NA36-1/2†† 46024 NA40-3/8†† 46025 NA40-1/2†† 46026 NA40-5/8 46027 NA40-3/4 46028 – – – – – – – – P-1930-BG
04/10
Spur Gears 20 and 16 Diametral Pitch (Cast Iron, Brass & Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Pitch Dia.
Bore
Dia.
DIAMETRAL PITCH 3.500 3.600 4.000 4.200 4.500 4.800 5.000 5.600 6.000 7.000 7.200 8.000 9.000 10.000
.375
1.25
.500
1.25
.500
1.50
2.25
16
DIAMETRAL PITCH 8 9 10 12 14 16 18 20 24 28 32 40 48 56 64 80
.500 .563 .625 .750 .875 1.000 1.125 1.250 1.500 1.750 2.000 2.500 3.000 3.500 4.000 5.000
11 12 13 14 15 16 18
.750* .750 .813 .875 .938 1.000 1.125
20
1.250
22
1.375
24
1.500
26
1.625
28
1.750
30
1.875
P-1930-BG
.1875
–
.250
–
.3125
– –
.3125
.75
.375
.88 1.00 1.00
.375
.500 .500 .625 .500 .625 .500 .625 .750 .500 .625 .750 .500 .625 .750 .875 .500 .625 .750 .875 1.000
04/10
With Keyway and Setscrew† Catalog Item Number Code
A
Face = .375” Outside Dia. = Pitch Dia. + .100” Overall Length = .375” + Hub Proj.
20
70 72 80 84 90 96 100 112 120 140 144 160 180 200
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
No. of Teeth
.56 .56 .63 .69 .75 .81 .94 .96 1.08 1.20 1.33
1.45
1.58
CAST IRON NA70 10216 – – .50 NA72 10218 – – B NA80 10220 – – NA84 10222 – – .50 NA90 10224 – – C NA96 10226 – – NA100 10228 – – NA112 10230 – – NA120 10232 – – .50 NA140 10234 – – D NA144 10236 – – NA160 10238 – – .62 NA180 10240 – – NA200B 10242 – – Face = .313" Outside Dia. = Pitch Dia. + .125" Overall Length = Face + Hub Proj. BRASS G226 09168 – – – G227 09170 – – G228 09172 – – G229 09174 – – A G230 09176 – – – G231 09178 – – G232 09180 – – G233 09182 – – – G235 09184 – – – G236 09186 – – B G237 09188 – – .31 G238 09190 – – G239 09192 – – D G240 09194 – – .38 G241 09196 – – G242 09198 – – STEEL Face = .500" NB11B 09704 NB11B-3/8† 46029 NB12B 09706 NB12B-3/8† 46030 .44 NB13B 09708 NB13B-3/8† 46031 NB14B 09710 NB14B-3/8† 46032 NB15B 09712 NB15B-1/2† 46033 .44 NB16B 09714 NB16B-1/2† 46034 NB18B 09716 NB18B-1/2† 46035 NB20B 09718 NB20B-1/2† 46036 .44 – – NB20B-5/8 46037 NB22B 09720 NB22B-1/2† 46038 .44 – – NB22B-5/8 46039 NB24B 09722 NB24B-1/2† 46040 .44 A – – NB24B-5/8 46041 – – NB24B-3/4 46042 NB26B 09724 NB26B-1/2† 46043 .44 – – NB26B-5/8 46044 – – NB26B-3/4 40645 NB28B 09726 NB28B-1/2† 46046 – – NB28B-5/8 46047 .50 – – NB28B-3/4 46048 – – NB28B-7/8 46049 NB30B 09728 NB30B-1/2† 46050 – – NB30B-5/8 46051 .50 – – NB30B-3/4 46052 – – NB30B-7/8 46053 – – NB30B-1 46054
HUB PROJ.
FACE
KEYWAY
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
20 D.P.
TOLERANCE ±.0005
16 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 51, 52 Lubrication — 314 Materials — 315 Selection Procedure — 49 *Special Pitch Diameter, used for calculating Center Distance only, not Ratio. †3/8" and 1/2" bores have one setscrew, no keyway. 5/8" bore and larger have standard keyway at 90° to setscrew. See Page 315.
Boston Gear 800-825-6544
21
Spur Gears 16 and 12 Diametral Pitch (Steel, Non-Metallic & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub Pitch Dia.
Bore
Dia.
With Keyway and Setscrew† Catalog Item Number Code
Face = .500" Outside Dia. = Pitch Dia. + .125" Overall Length = .500" + Hub Proj.
16
DIAMETRAL PITCH STEEL
HUB PROJ.
FACE
KEYWAY
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
32
2.000
.500 .625 .750 .875 1.000
36 40 48
2.250 2.500 3.000
.500
16 20 24 32 40 48 64
1.000 1.250 1.500 2.000 2.500 3.000 4.000
54 56 60 64 72 80 84 96 112 120 128 144 160 192
3.375 3.500 3.750 4.000 4.500 5.000 5.250 6.000 7.000 7.500 8.000 9.000 10.000 12.000
.375
.500
.500
.625
.625
1.70 1.95 1.69 2.19 .81 1.06 1.31 1.81 – – – 1.25 1.25 1.38 1.38 1.38 1.50 1.50 1.50 1.50 1.50 1.50 1.75 1.75 2.00
12
DIAMETRAL PITCH
16 D.P.
12 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 52, 53 Lubrication — 314 Materials — 315 Selection Procedure — 49 *Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
11 12 13 14 15 16 18
1.000* 1.000 1.083 1.167 1.250 1.333 1.500
20
1.667
21
1.750
22
1.833
24
2.000
30 32 36 40 42
2.500 2.667 3.000 3.333 3.500
†1/2" bore has one setscrew, no keyway. 5/8" bore and larger have standard keyway at 90° to setscrew. See Page 315.
22
Boston Gear 800-825-6544
.500
.625 .625 .750 .625 .750 .875 .625 .750 .875 1.000 .625 .750 .875 1.000 .625
.75 .75 .83 .92 1.00 .99 1.15 1.32 1.40
1.49
1.65 2.15 1.92 2.25 2.34 2.50
NB32 09730 NB32-1/2 46055 – – NB32-5/8 46056 .50 – – NB32-3/4 46057 A – – NB32-7/8 46058 – – NB32-1 46059 NB36 09732 – – .50 NB40A 10244 – – NB48A 10246 – – NON-METALLIC QBH16 09014 – – .50 QBH20 09018 – – .50 QBH24 09022 – – .50 A QBH32 09024 – – – QB40 09000 – – – QB48 09002 – – – QB64 09006 – – CAST IRON .50 NB54 10248 – – .50 B NB56 10250 – – .62 NB60 10252 – – NB64 10254 – – NB72 10256 – – C NB80 10258 – – .62 NB84 10260 – – NB96 10262 – – NB112 10264 – – NB120 10266 – – D NB128 10268 – – NB144 10270 – – .75 NB160B 10272 – – NB192B 10274 – – Face = .750" Outside Dia. = Pitch Dia. + .167" Overall Length = .750" + Hub Proj. STEEL ND11B 09744 ND11B-1/2† 46060 ND12B 09746 ND12B-1/2† 46061 .50 ND13B 09748 ND13B-1/2† 46062 ND14B 09750 ND14B-1/2† 46063 ND15B 09752 ND15B-5/8 46064 .50 ND16B 09754 ND16B-5/8 46065 ND18B 09756 ND18B-5/8 46066 ND20B 09758 ND20B-5/8 46067 .50 – – ND20B-3/4 46068 ND21B 09760 ND21B-5/8 46069 .50 – – ND21B-3/4 46070 A – – ND21B-7/8 46071 ND22B 09762 ND22B-5/8 46072 – – ND22B-3/4 46073 .50 – – ND22B-7/8 46074 – – ND22B-1 46075 ND24B 09764 ND24B-5/8 46076 – – ND24B-3/4 46077 .50 – – ND24B-7/8 46078
.62
– ND30 ND32A ND36A ND40A ND42A
– ND24B-1 09766 – 10276 – 10278 – 10280 – 10282 –
P-1930-BG
46079 – – – – –
04/10
Spur Gears 12 and 10 Diametral Pitch (Steel, Non-Metallic & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub Pitch Dia.
Bore
Dia.
12
DIAMETRAL PITCH 15 18 21 24 30 36 48 60
1.250 1.500 1.750 2.000 2.500 3.000 4.000 5.000
48 54 60 64 72 84 96 108 112 120 144 168
4.000 4.500 5.000 5.333 6.000 7.000 8.000 9.000 9.333 10.000 12.000 14.000
.500
.625 .750
.750
1.00 1.25 1.50 1.75 2.25 – – –
1.75
.750
2.00
.875
2.00
With Keyway and Setscrew† Catalog Item Number Code
Face = .750" Outside Dia. = Pitch Dia. + .167" Overall Length = .750" + Hub Proj. NON-METALLIC QDH15 09038 – – .50 QDH18 09042 – – QDH21 09046 – – QDH24 09050 – – .50 A QDH30 09052 – – – QD36 09026 – – – QD48 09030 – – – QD60 09034 – – CAST-IRON ND48 10284 – – C ND54 10286 – – ND60 10288 – – .75 ND64 10290 – – ND72 10292 – – ND84 10294 – – ND96 10296 – – D ND108 10298 – – .75 ND112 10300 – –
A
FACE
PITCH DIA.
BORE
ND120 ND144 ND168
10302 – – 10304 – – 10306 – – Face = 1.000" Outside Dia. = Pitch Dia. + .200" Overall Length = 1.000" + Hub Proj.
1.00
10
DIAMETRAL PITCH
HUB PROJ.
HUB DIA.
OVERALL LENGTH
STEEL 11 12 14 15 16
1.200* 1.200 1.400 1.500 1.600
18
1.800
20
2.000
24
2.400
25 28 30 32 35 36
2.500 2.800 3.000 3.200 3.500 3.600
15 18 20 25 30
1.500 1.800 2.000 2.500 3.000
.625 .750 .750 .875 .750 .875 1.000 .750 .875 1.000 .750 .750
.625 .750
.92 .92 1.02 1.12 1.22 1.42 1.62 2.02 2.12 1.81 2.02 2.22 2.52 2.61 1.20 1.50 1.70 2.20 2.70
NF11B NF12B NF14B NF15B .62 NF16B NF18B .62 – NF20B .62 – A – NF24B .62 – – .62 NF25 NF28A NF30A .88 NF32A NF35A NF36A NON-METALLIC QFH15 .62 QFH18 A QFH20 .62 QFH25 QFH30 .62
09778 09780 09782 09784 09786 09788 – 09790 – – 09792 – – 09794 10310 10312 10314 10316 10318
NF11B-5/8 NF12B-5/8 NF14B-5/8 NF15B-3/4 NF16B-3/4 NF18B-3/4 NF18B-7/8 NF20B-3/4 NF20B-7/8 NF20B-1 NF24B-3/4 NF24B-7/8 NF24B-1 – – – – – –
46080 46081 46082 46083 46084 46085 46086 46087 46088 46089 46090 46091 46092 – – – – – –
09062 09066 09068 09070 09072
– – – – –
– – – – –
STANDARD TOLERANCES DIMENSION BORE All
12 D.P.
TOLERANCE ±.0005
10 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 53, 54 Lubrication — 314 Materials — 315 Selection Procedure — 49 *Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
†All gears have standard keyway at 90° to setscrew. See Page 315.
P-1930-BG
04/10
Boston Gear 800-825-6544
23
Spur Gears 10 and 8 Diametral Pitch (Cast Iron, Steel & Non-Metallic) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Pitch Dia.
Bore
Dia.
DIAMETRAL PITCH
HUB PROJ.
FACE
KEYWAY
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
4.000 4.200 4.500 4.800 5.000 5.400 5.500 6.000 6.400 7.000 7.200 8.000 8.400 9.000 9.600 10.000 11.000 12.000 14.000 14.400 16.000 18.000
2.12 .875
2.25 2.25 1.00
2.50 2.75
8
DIAMETRAL PITCH
STANDARD TOLERANCES DIMENSION BORE All
10 D.P.
TOLERANCE ±.0005
11 12 14 15
1.500* 1.500 1.750 1.875
16
2.000
18
2.250
20
2.500
22
2.750
24 28 30 32
3.000 3.500 3.750 4.000
16 18 20 24 28
2.000 2.250 2.500 3.000 3.500
8 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 54, 55 Lubrication — 314 Materials — 315 Selection Procedure — 49
.750 .875 .875 1.000 .875 1.000 1.125 .875 1.000 1.125 .875 1.000 1.125 .875 1.000 .750 .875
With Keyway and Setscrew† Catalog Item Number Code
Face = 1.000" Outside Dia. = Pitch Dia. + .200" Overall Length = 1.000" + Hub Proj.
10
40 42 45 48 50 54 55 60 64 70 72 80 84 90 96 100 110 120 140 144 160 180
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
1.12 1.12 1.31 1.43 1.56 1.81 2.06 2.31 2.06 2.56 2.75 3.00 1.62 1.88 2.12 2.62 3.12
CAST IRON NF40 10320 – – NF42 10322 – – B NF45 10324 – – NF48 10326 – – NF50 10328 – – C NF54 10330 – – .88 NF55 10332 – – NF60 10334 – – NF64 10336 – – NF70 10338 – – NF72 10340 – – NF80 10342 – – NF84 10344 – – D NF90 10346 – – NF96 10348 – – .88 NF100 10350 – – NF110 10352 – – NF120 10356 – – NF140 10358 – – 1.00 NF144 10360 – – NF160 10362 – – NF180 10364 – – Face = 1.250" Outside Dia. = Pitch Dia. + .250" Overall Length = 1.250" + Hub Proj. STEEL NH11B 09806 NH11B-3/4 46093 .75 NH12B 09808 NH12B-3/4 46094 NH14B 09810 NH14B-3/4 46095 .75 NH15B 09812 NH15B-7/8 46096 NH16B 09814 NH16B-7/8 46097 .75 – – NH16B-1 46098 NH18B 09816 NH18B-7/8 46099 .75 – – NH18B-1 46100 – – NH18B-1-1/8 46101 A NH20B 09818 NH20B-7/8 46102 .75 – – NH20B-1 46103 – – NH20B-1-1/8 46104 NH22B 09820 NH22B-7/8 46105 .75 – – NH22B-1 46106 – – NH22B-1-1/8 46107 NH24A 10368 – – .88 NH28A 10370 – – NH30A 10372 – – .88 NH32A 10374 – – NON-METALLIC QHH16 09082 – – .75 QHH18 09084 – – A QHH20 09086 – – .75 QHH24 09088 – – QHH28 09090 – –
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew. See Page 315.
24
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears 8 and 6 Diametral Pitch (Cast Iron & Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Pitch Dia.
Bore
Dia.
DIAMETRAL PITCH 4.500 5.000 5.250 5.500 6.000 6.750 7.000 7.500 8.000 9.000 10.000 10.500 11.000 12.000 14.000 15.000 16.000 18.000 20.000
1.000
1.125
1.125
2.50
3.00
3.25
6
DIAMETRAL PITCH 11 12 14 15
16
18
20 21 24 27 30
2.000* 1.000 2.000 1.000 2.333 1.125 1.000 2.500 1.125 1.1875 1.250 1.000 2.667 1.125 1.1875 1.250 1.000 3.000 1.125 1.1875 1.250 1.000 3.333 1.125 1.1875 1.250 3.500 1.000 4.000 4.500 1.125 5.000
With Keyway and Setscrew† Catalog Item Number Code
A
Face = 1.250" Outside Dia. = Pitch Dia. + .250" Overall Length = 1.250" + Hub Proj.
8
36 40 42 44 48 54 56 60 64 72 80 84 88 96 112 120 128 144 160
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
No. of Teeth
1.46 1.79 1.96
2.13
2.46
2.79 2.96 3.00 3.50 4.00
CAST IRON NH36 10376 – – NH40 10378 – – B NH42 10380 – – NH44 10382 – – NH48 10384 – – 1.00 C NH54 10386 – – NH56 10388 – – NH60 10390 – – NH64 10392 – – NH72 10394 – – NH80 10396 – – NH84 10398 – – D NH88 10400 – – NH96 10402 – – 1.12 NH112 10404 – – NH120 10406 – – NH128 10408 – – NH144 10410 – – 1.25 NH160B 10412 – – Face = 1.500" Outside Dia. = Pitch Dia + .333" Overall Length = 1.500" + Hub Proj. STEEL NJ11B 09830 NJ11B-1 46108 .88 NJ12B 09832 NJ12B-1 46109 NJ14B 09834 NJ14B-1 46110 .88 – – NJ14B-1-1/8 46111 NJ15B 09836 NJ15B-1 46112 – – NJ15B-1-1/8 46113 .88 – – NJ15B-1-3/16 46114 – – NJ15B-1-1/4 46115 NJ16B 09838 NJ16B-1 46116 – – NJ16B-1-1/8 46117 .88 A – – NJ16B-1-3/16 46118 – – NJ16B-1-1/4 46119 NJ18B 09840 NJ18B-1 46120 – – NJ18B-1-1/8 46121 .88 – – NJ18B-1-3/16 46122 – – NJ18B-1-1/4 46123 NJ20 09842 NJ20-1 46124 – – NJ20-1-1/8 46125 .88 – – NJ20-1-3/16 46126 – – NJ20-1-1/4 46127 .88 NJ21B 09844 – – NJ24A 10414 – – .88 NJ27A 10416 – – NJ30A 10418 – –
FACE
PITCH DIA.
HUB PROJ.
BORE
HUB DIA.
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
8 D.P.
TOLERANCE ±.0005
6 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 55, 56 Lubrication — 314 Materials — 315 Selection Procedure — 49 *Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew. See Page 315.
P-1930-BG
04/10
Boston Gear 800-825-6544
25
Spur Gears 6 and 5 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Hub Pitch Dia.
Bore
Dia.
Proj.
Style See Page 315
Without Keyway or Setscrew Catalog Item Number Code
Face = 1.500˝ Outside Dia. = Pitch Dia + .333˝ Overall Length = 1.500˝ + Hub Proj.
6
DIAMETRAL PITCH CAST IRON
FACE
PITCH DIA.
32 33 36 40 42 48 54 60 64 66 72 84 96 108 120 144
HUB PROJ.
HUB DIA.
BORE
5.333 5.500 6.000 6.667 7.000 8.000 9.000 10.000 10.667 11.000 12.000 14.000 16.000 18.000 20.000 24.000
B 1.125
2.50
1.00
C
1.25
D
3.00 1.250 3.25 3.50 3.75
1.50
STANDARD TOLERANCES DIMENSION BORE All
6 D.P.
TOLERANCE ±.0005
5 D.P.
11 12 14 15 16 18 20
2.400* 2.400 2.800 3.000 3.200 3.600 4.000
24 25 30 35 40 45 50 55 60 70 80 100
4.800 5.000 6.000 7.000 8.000 9.000 10.000 11.000 12.000 14.000 16.000 20.000
10420 10422 10424 10426 10428 10430 10432 10434 10436 10438 10440 10442 10444 10446 10448 10452
Face = 1.750" Outside Dia. = Pitch Dia. + .400" Overall Length = 1.750" + Hub Proj.
5
DIAMETRAL PITCH OVERALL LENGTH
NJ32 NJ33 NJ36 NJ40 NJ42 NJ48 NJ54 NJ60 NJ64 NJ66 NJ72 NJ84 NJ96 NJ108 NJ120B NJ144B
1.0625
STEEL 1.78 1.78 2.18 2.38 .88 2.58 2.98 3.38 CAST IRON
1.0625
3.00
1.25
1.1875
3.00
1.25
1.1875
3.50
1.25
1.3125
3.75
1.50
A
A B
D
NK11B NK12B NK14B NK15B NK16B NK18B NK20B
09846 09848 09850 09852 09854 09856 09858
NK24B NK25B NK30B NK35B NK40B NK45B NK50B NK55B NK60B NK70B NK80B NK100B
10454 10456 10458 10460 10462 10464 10466 10468 10470 10472 10474 10478
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 56 Lubrication — 314 Materials — 315 Selection Procedure — 49
26
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears 4 and 3 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Hub Pitch Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH 3.000* 3.000 3.500 3.750 4.000 4.500 5.000 5.500
24 28 30 32 36 40 42 44 48 54 56 60 64 72 80 84 88 96
6.000 7.000 7.500 8.000 9.000 10.000 10.500 11.000 12.000 13.500 14.000 15.000 16.000 18.000 20.000 21.000 22.000 24.000
1.125
1.125
1.250
1.375
3
DIAMETRAL PITCH 11 12 14 15 16 18 20 21
4.000* 4.000 4.667 5.000 5.333 6.000 6.667 7.000
24 30 36 42 48 54 60 72 84 96 108
8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 28.000 32.000 36.000
Without Keyway or Setscrew Catalog Item Number Code
1.3125
1.4375
1.5625 1.6875 1.9375
STEEL 2.27 2.27 2.77 3.02 .88 3.27 3.77 4.27 4.77 CAST IRON
A
A
04/10
NL11B NL12B NL14B NL15B NL16B NL18B NL20B NL22B
09860 09862 09864 09866 09868 09870 09872 09874
NL24B 10484 NL28B 10486 3.50 NL30 10488 B NL32B 10490 NL36B 10492 NL40B 10494 C NL42 10496 1.50 NL44B 10498 NL48B 10500 4.00 NL54 10502 NL56B 10504 NL60 10506 D NL64B 10508 NL72B 10510 NL80B 10512 1.50 NL84 10514 4.50 NL88B 10516 1.75 NL96B 10518 Face = 3.000"† Outside Dia. = Pitch Dia. + .667" Overall Length = Face + Hub Proj. STEEL NO11B† 09876 NO12B† 09878 NO14B 09880 NO15B 09882 – – A NO16B 09884 NO18B 09886 NO20 09888 NO21B 09890 CAST IRON 4.50 NO24B 10524 1.25 B NO30B 10526 5.25 NO36B 10528 1.75 C NO42 10530 NO48B 10532 5.25 1.75 NO54 10534 NO60B 10536 5.50 D NO72B 10538 1.75 5.75 NO84B 10540 NO96B 10542 5.75 1.75 NO108B 10544
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio. †NO11B and NO12B have 4" Face.
P-1930-BG
A
Face = 2.000" Outside Dia. = Pitch Dia. + .500" Overall Length = 2.000" + Hub Proj.
4
11 12 14 15 16 18 20 22
Style See Page 315
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
4 D.P.
TOLERANCE ±.0005
3 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 56, 57 Lubrication — 314 Materials — 315 Selection Procedure — 49
Boston Gear 800-825-6544
27
Change Gears 20 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs)
No. of Teeth
A
Pitch Dia.
Hub Catalog Dia. Number
Item Code
No. of Teeth
20
DIAMETRAL PITCH
.375 FACE
PITCH DIA.
1
1
(2) 8 × 16 KEYWAYS 180° APART
HUB DIA.
.625 BORE
REFERENCE PAGES
20 D.P.
Alterations — 314 Horsepower Ratings — 51 Lubrication — 314 Materials — 315 Selection Procedure — 49
COMPOUND STEEL BUSHINGS These steel bushings have 2 keys, 180° apart and fit bores of GA series change gears with a slip fit. They are used to mount two gears on one shaft (or stud) and drive one from the other. .4370 .4380 .125
.737 .733
.625
.750
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
STEEL 1.000 GA20 1.050 GA21 1.100 GA22 1.150 GA23 1.200 GA24 1.250 GA25 1.300 GA26 1.350 GA27 1.400 GA28 1.450 GA29 1.500 GA30 1.550 GA31 1.600 GA32 1.650 GA33 1.700 – GA34 1.750 GA35 1.800 GA36 1.850 GA37 1.900 GA38 1.950 GA39 2.000 GA40 2.050 GA41 2.100 GA42 2.150 GA43 2.200 GA44 2.250 GA45 2.300 GA46 2.350 GA47 2.400 GA48 2.450 GA49 2.500 GA50 CAST IRON 2.550 GA51B 2.600 GA52B 2.650 GA53B 2.700 GA54B 2.750 GA55B 2.800 GA56B 2.850 GA57B 2.900 1.38 GA58B 2.950 GA59B 3.000 GA60B 3.050 GA61B 3.100 GA62B 3.150 GA63B 3.200 GA64B 3.250 GA65B 3.300 GA66B 3.350 1.56 GA67B 3.400 GA68B 3.450 GA69B 3.500 GA70B
Pitch Dia.
Hub Catalog Dia. Number
Item Code
Outside Dia. = Pitch Dia. +.100"
10038 10040 10042 10044 10046 10048 10050 10052 10054 10056 10058 10060 10062 10064 10066 10068 10070 10072 10074 10076 10078 10080 10082 10084 10086 10088 10090 10092 10094 10096 10098 10802 10804 10806 10808 10810 10812 10814 10816 10818 10820 10822 10824 10826 10828 10830 10832 10834 10836 10838 10840
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
CAST IRON 3.550 GA71B 3.600 GA72B 3.650 GA73B 3.700 GA74B 3.750 1.56 GA75B 3.800 GA76B 3.850 GA77B 3.900 GA78B 3.950 GA79B 4.000 GA80B 4.050 GA81B 4.100 GA82B 4.150 GA83B 4.200 GA84B 4.250 GA85B 4.300 GA86B 4.350 GA87B 4.400 GA88B 4.450 GA89B 4.500 GA90B 4.550 GA91B 4.600 GA92B 4.650 GA93B 4.700 GA94B 4.750 GA95B 4.800 GA96B 4.850 GA97B 4.900 1.69 GA98B 4.950 GA99B 5.000 GA100B 5.050 GA101B 5.100 GA102B 5.150 GA103B 5.200 GA104B 5.250 GA105B 5.300 GA106B 5.350 GA107B 5.400 GA108B 5.450 GA109B 5.500 GA110B 5.550 GA111B 5.600 GA112B 5.650 GA113B 5.700 GA114B 5.750 GA115B 5.800 GA116B 5.850 GA117B 5.900 GA118B 5.950 GA119B 6.000 GA120B Style See Page 315
10842 10844 10846 10848 10850 10852 10854 10856 10858 10860 10862 10864 10866 10868 10870 10872 10874 10876 10878 10880 10882 10884 10886 10888 10890 10892 10894 10896 10898 10900 10902 10904 10906 10908 10910 10912 10914 10916 10918 10920 10922 10924 10926 10928 10930 10932 10934 10936 10938 10940
20 – 78 Teeth – A 79 – 120 Teeth – C
ORDER BY CATALOG NUMBER OR ITEM CODE
28
CATALOG NO.
ITEM CODE
GAB20A
18500
Boston Gear 800-825-6544
P-1930-BG
04/10
Change Gears 16 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.
Hub Catalog Dia. Number
Item Code
No. of Teeth
16
DIAMETRAL PITCH
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
STEEL 1.250 GB20 1.313 GB21 1.375 GB22 1.438 GB23 1.500 GB24 1.563 GB25 1.625 GB26 1.688 GB27 1.750 GB28 1.813 GB29 1.875 – GB30 1.938 GB31 2.000 GB32 2.063 GB33 2.125 GB34 2.188 GB35 2.250 GB36 2.313 GB37 2.375 GB38 2.438 GB39 2.500 GB40 CAST IRON 2.563 GB41B 2.625 GB42B 2.688 GB43B 2.750 GB44B 2.913 GB45B 2.875 GB46B 2.938 1.56 GB47B 3.000 GB48B 3.063 GB49B 3.125 GB50B 3.188 GB51B 3.250 GB52B 3.313 GB53B 3.375 GB54B 3.438 GB55B 3.500 GB56B 3.563 GB57B 3.625 GB58B 3.688 GB59B 3.750 GB60B 3.813 GB61B 3.875 GB62B 3.938 GB63B 4.000 1.81 GB64B 4.063 GB65B 4.125 GB66B 4.188 GB67B 4.250 GB68B 4.313 GB69B 4.375 GB70B 4.438 GB71B 4.500 GB72B 4.563 GB73B 4.625 GB74B 4.688 GB75B
Pitch Dia.
Hub Catalog Dia. Number
A
Item Code
Outside Dia. = Pitch Dia. +.125"
10100 10102 10104 10106 10108 10110 10112 10114 10116 10118 10120 10122 10124 10126 10128 10130 10132 10134 10136 10138 10140 10942 10944 10946 10948 10950 10952 10954 10956 10958 10960 10962 10964 10966 10968 10970 10972 10974 10976 10978 10980 10982 10984 10986 10988 10990 10992 10994 10996 10998 11000 11002 11004 11006 11008 11010
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
CAST IRON 4.750 GB76B 4.813 GB77B 4.875 GB78B 4.938 GB79B 5.000 GB80B 5.063 GB81B 5.125 GB82A 5.188 GB83A 5.250 GB84A 5.313 GB85A 5.375 GB86A 5.438 GB87A 5.500 GB88A 5.563 GB89A 5.625 GB90A 5.688 GB91A 5.750 GB92A 5.813 GB93A 5.875 GB94A 5.938 GB95A 6.000 GB96A 6.063 GB97A 6.125 GB98A 6.188 GB99A 6.250 GB100A 6.313 1.81 GB101A 6.375 GB102A 6.438 GB103A 6.500 GB104A 6.563 GB105A 6.625 GB106A 6.688 GB107A 6.750 GB108A 6.913 GB109A 6.975 GB110A 6.938 GB111A 7.000 GB112A 7.063 GB113A 7.125 GB114A 7.188 GB115A 7.250 GB116A 7.313 GB117A 7.375 GB118A 7.438 GB119A 7.500 GB120A 7.563 GB121A 7.625 GB122A 7.688 GB123A 7.750 GB124A 7.813 GB125A 7.875 GB126A 7.938 GB127A 8.000 GB128A Style See Page 315
11012 11014 11016 11018 11020 11022 11024 11026 11028 11030 11032 11034 11036 11038 11040 11042 11044 11046 11048 11050 11052 11054 11056 11058 11060 11062 11064 11066 11068 11070 11072 11074 11076 11078 11080 11082 11084 11086 11088 11090 11092 11094 11096 11098 11100 11102 11104 11106 11108 11110 11112 11114 11116
20 – 79 Teeth – A
3 3 × KEYWAYS 16 32 180° APART
.500 FACE
PITCH DIA.
(2)
HUB DIA.
.750 BORE
REFERENCE PAGES
16 D.P.
Alterations — 314 Horsepower Ratings — 52 Lubrication — 314 Materials — 315 Selection Procedure — 49
COMPOUND STEEL BUSHINGS These steel bushings have 2 keys, 180° apart and fit bores of GB series change gears with a slip fit. They are used to mount two gears on one shaft (or stud) and drive one from the other. .4995 .5005 .188
.914 .910
.750
1.000
80 – 128 Teeth – C
ORDER BY CATALOG NUMBER OR ITEM CODE
P-1930-BG
04/10
CATALOG NO.
ITEM CODE
GBB16A
18502
Boston Gear 800-825-6544
29
Change Gears 12 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
A
Pitch Dia.
Hub Catalog Dia. Number
Item Code
No. of Teeth
12
DIAMETRAL PITCH
1 1 (2) – × – KEYWAYS 4 8 180° APART
.750 FACE
PITCH DIA.
HUB DIA.
1.000 BORE
REFERENCE PAGES
12 D.P.
Alterations — 314 Horsepower Ratings — 53 Lubrication — 314 Materials — 315 Selection Procedure — 49
Compound Steel Bushings These steel bushings have 2 keys, 180° apart and fit bores of GD series change gears with a slip fit. They are used to mount two gears on one shaft (or stud) and drive one from the other. .7495 .7505 .250
1.217 1.213
1.000
1.50
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
STEEL 1.667 GD20 1.750 GD21 1.833 GD22 1.917 GD23 2.000 GD24 2.083 GD25 2.167 GD26 2.250 GD27 2.333 – GD28 2.417 GD29 2.500 GD30 2.583 GD31 2.667 GD32 2.750 GD33 2.833 GD34 2.971 GD35 3.000 GD36 CAST IRON 3.083 GD37A 3.167 GD38A 3.250 GD39A 3.333 GD40A 3.417 GD41A 3.500 1.76 GD42A 3.583 GD43A 3.667 GD44A 3.750 GD45A 3.833 GD46A 3.917 GD47A 4.000 GD48A 4.083 GD49A 4.167 GD50A 4.250 GD51A 4.333 GD52A 4.417 GD53A 4.500 GD54A 4.583 GD55A 4.667 GD56A 4.750 GD57A 4.833 GD58A 4.917 GD59A 5.000 GD60A 5.083 2.19 GD61A 5.167 GD62A 5.250 GD63A 5.333 GD64A 5.417 GD65A 5.500 GD66A 5.583 GD67A 5.667 GD68A 5.750 GD69A 5.833 GD70A 5.917 GD71A 6.000 GD72A 6.083 GD73A 6.167 GD74A
Pitch Dia.
Hub Catalog Dia. Number
Item Code
Outside Dia. = Pitch Dia. +.167"
10142 10144 10146 10148 10150 10152 10154 10156 10158 10160 10162 10164 10166 10168 10170 10172 10174 11118 11120 11122 11124 11126 11128 11130 11132 11134 11136 11138 11140 11142 11144 11146 11148 11150 11152 11154 11156 11158 11160 11162 11164 11166 11168 11170 11172 11174 11176 11178 11180 11182 11184 11186 11188 11190 11192
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
CAST IRON 6.250 GD75A 6.333 GD76A 6.417 GD77A 6.500 GD78A 6.583 2.19 GD79A 6.667 GD80A 6.750 GD81A 6.833 GD82A 6.917 GD83A 7.000 GD84A 7.083 GD85A 7.167 GD86A 7.250 GD87A 7.333 GD88A 7.417 GD89A 7.500 GD90A 7.583 GD91A 7.667 GD92A 7.750 GD93A 7.833 GD94A 7.917 GD95A 8.000 GD96A 8.083 GD97A 8.167 GD98A 8.250 GD99A 8.333 2.44 GD100A 8.417 GD101A 8.500 GD102A 8.583 GD103A 8.667 GD104A 8.750 GD105A 8.833 GD106A 8.917 GD107A 9.000 GD108A 9.083 GD109A 9.167 GD110A 9.250 GD111A 9.333 GD112A 9.417 GD113A 9.500 GD114A 9.583 GD115A 9.667 GD116A 9.750 GD117A 9.833 GD118A 9.917 GD119A 10.000 GD120A
Style See Page 315
11194 11196 11198 11200 11202 11204 11206 11208 11210 11212 11214 11216 11218 11220 11222 11224 11226 11228 11230 11232 11234 11236 11238 11240 11242 11244 11246 11248 11250 11252 11254 11256 11258 11260 11262 11264 11266 11268 11270 11272 11274 11276 11278 11280 11282 11284
20 – 60 Teeth – A 61 – 120 Teeth – C
ORDER BY CATALOG NUMBER OR ITEM CODE
30
CATALOG NO.
ITEM CODE
GDB12A
18504
Boston Gear 800-825-6544
P-1930-BG
04/10
Change Gears 10 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.
Hub Catalog Dia. Number
Item Code
No. of Teeth
10
DIAMETRAL PITCH
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
STEEL 2.000 GF20 2.100 GF21 2.200 GF22 2.300 GF23 2.400 GF24 2.500 – GF25 2.600 GF26 2.700 GF27 2.800 GF28 2.900 GF29 3.000 GF30 CAST IRON 3.100 GF31B 3.200 GF32B 3.300 GF33B 3.400 GF34B 3.500 GF35B 3.600 1.94 GF36B 3.700 GF37B 3.800 GF38B 3.900 GF39B 4.000 GF40B 4.100 GF41B 4.200 GF42B 4.300 GF43B 4.400 GF44B 4.500 GF45B 4.600 GF46B 4.700 GF47B 4.800 2.68 GF48B 4.900 GF49B 5.000 GF50B 5.100 GF51B 5.200 GF52A 5.300 GF53A 5.400 GF54A 5.500 GF55A 5.600 GF56A 5.700 3.12 GF57A 5.800 GF58A 5.900 GF59A 6.000 GF60A
Pitch Dia.
Hub Catalog Dia. Number
A
Item Code
Outside Dia. = Pitch Dia. +.200"
10176 10178 10180 10182 10184 10186 10188 10190 10192 10194 10196 11286 11288 11290 11292 11294 11296 11298 11300 11302 11304 11306 11308 11310 11312 11314 11316 11318 11320 11322 11324 11326 11328 11330 11332 11334 11336 11338 11340 11342 11344
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
CAST IRON 6.100 GF61A 6.200 GF62A 6.300 GF63A 6.400 GF64A 6.500 GF65A 6.600 GF66A 6.700 GF67A 6.800 GF68A 6.900 GF69A 7.000 GF70A 7.100 GF71A 7.200 GF72A 7.300 GF73A 7.400 GF74A 7.500 GF75A 7.600 GF76A 7.700 GF77A 7.800 GF78A 7.900 GF79A 8.000 GF80A 8.100 3.12 GF81A 8.200 GF82A 8.300 GF83A 8.400 GF84A 8.500 GF85A 8.600 GF86A 8.700 GF87A 8.800 GF88A 8.900 GF89A 9.000 GF90A 9.100 GF91A 9.200 GF92A 9.300 GF93A 9.400 GF94A 9.500 GF95A 9.600 GF96A 9.700 GF97A 9.800 GF98A 9.900 GF99A 10.000 GF100A Style See Page 315
11346 11348 11350 11352 11354 11356 11358 11360 11362 11364 11366 11368 11370 11372 11374 11376 11378 11380 11382 11384 11386 11388 11390 11392 11394 11396 11398 11400 11402 11404 11406 11408 11410 11412 11414 11416 11418 11420 11422 11424
20 – 60 Teeth – A 61 – 66 Teeth – B 67 – 100 Teeth – C
5 5 × KEYWAYS 16 32 180° APART
1.000" FACE
PITCH DIA.
(2)
HUB DIA.
1.250 BORE
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 54 Lubrication — 314 Materials — 315 Selection Procedure — 49
10 D.P.
Compound Steel Bushings These steel bushings have 2 keys, 180° apart and fit bores of GF series change gears with a slip fit. They are used to mount two gears on one shaft (or stud) and drive one from the other. .9995 1.0005 .313
1.523 1.519
1.250
2.000
ORDER BY CATALOG NUMBER OR ITEM CODE
P-1930-BG
04/10
CATALOG NO.
ITEM CODE
GFB10A
18506
Boston Gear 800-825-6544
31
Change Gears 8 Diametral Pitch (Steel & Cast Iron) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
A
Pitch Dia.
Hub Catalog Dia. Number
Item Code
No. of Teeth
8
DIAMETRAL PITCH
20 21 22 23 24
3 3 (2) 8 × 16 KEYWAYS 180° APART
1.250 FACE
PITCH DIA. HUB DIA.
1.375 BORE
REFERENCE PAGES
8 D.P.
Alterations — 314 Horsepower Ratings — 55 Lubrication — 314 Materials — 315 Selection Procedure — 49
Compound Steel Bushings These steel bushings have 2 keys, 180° apart and fit bores of GH series change gears with a slip fit. They are used to mount two gears on one shaft (or stud) and drive one from the other. 1.1245 1.1255
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
STEEL 2.500 – GH20 2.625 – GH21 2.750 – GH22 2.875 – GH23 3.000 – GH24 CAST IRON 3.125 GH25B 3.250 GH26B 3.375 GH27B 3.500 GH28B 3.625 GH29B 3.750 2.06 GH30B 3.875 GH31B 4.000 GH32B 4.125 GH33B 4.250 GH34B 4.375 GH35B 4.500 GH36B 4.625 GH37B 4.750 GH38B 4.875 GH39B 5.000 GH40B 5.125 2.69 GH41A 5.250 GH42A 5.375 GH43A 5.500 GH44A 5.625 GH45A 5.750 GH46A 5.875 GH47A 6.000 GH48A 6.125 GH49A 6.250 GH50A 6.375 GH51A 6.500 3.12 GH52A 6.625 GH53A 6.750 GH54A 6.875 GH55A 7.000 GH56A 7.125 GH57A 7.250 GH58A 7.375 3.25 GH59A 7.500 GH60A
Pitch Dia.
Hub Catalog Dia. Number
Item Code
Outside Dia. = Pitch Dia. +.250"
10198 10200 10202 10204 10206 11426 11428 11430 11432 11434 11436 11438 11440 11442 11444 11446 11448 11450 11452 11454 11456 11458 11460 11462 11464 11466 11468 11470 11472 11474 11476 11478 11480 11482 11484 11486 11488 11490 11492 11494 11496
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
CAST IRON 7.625 GH61A 7.750 GH62A 7.875 GH63A 8.000 GH64A 8.125 GH65A 8.250 GH66A 8.375 GH67A 8.500 GH68A 8.625 GH69A 8.750 3.25 GH70A 8.875 GH71A 9.000 GH72A 9.125 GH73A 9.250 GH74A 9.375 GH75A 9.500 GH76A 9.625 GH77A 9.750 GH78A 9.875 GH79A 10.000 GH80A 10.125 GH81A 10.250 GH82A 10.375 GH83A 10.500 GH84A 10.625 GH85A 10.750 GH86A 10.875 GH87A 11.000 GH88A 11.125 3.75 GH89A 11.250 GH90A 11.375 GH91A 11.500 GH92A 11.625 GH93A 11.750 GH94A 11.875 GH95A 12.000 GH96A 12.125 GH97A 12.250 GH98A 12.375 GH99A 12.500 GH100A
Style See Page 315
11498 11500 11502 11504 11506 11508 11510 11512 11514 11516 11518 11520 11522 11524 11526 11528 11530 11532 11534 11536 11538 11540 11542 11544 11546 11548 11550 11552 11554 11556 11558 11560 11562 11564 11566 11568 11570 11572 11574 11576
20 – 49 Teeth – A 50 – 57 Teeth – B 58 – 68 Teeth – C 69 – 100 Teeth – D
.375
1.698 1.694
1.375
2.50
ORDER BY CATALOG NUMBER OR ITEM CODE
32
CATALOG NO.
ITEM CODE
GHB8A
18508
Boston Gear 800-825-6544
P-1930-BG
04/10
Stem Pinions 20 through 6 Diametral Pitch (Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) Boston Gear Stem Pinions feature small numbers of teeth cut integral on a steel shaft. Undercutting of the teeth is minimized by the use of special enlarged Pitch Diameters. When run with standard stock spur gears, they provide high ratios not normally found in spur gear drives. They are not intended to be operated with each other, with internal gears or with 11 tooth pinions, but will run satisfactorily with all other standard 141⁄2° Pressure Angle spur gears.
A
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.*
Stem Dia.
Stem Length
Overall Length
Catalog Number
.375 .375 .500 .625
2.875 2.875 3.375 3.375
4.500 4.500 5.000 5.000
NAR5 NAR6 NAR8 NAR10
20
DIAMETRAL PITCH 5 6 8 10
.287 .335 .430 .525
FACE = 1.125"
16
DIAMETRAL PITCH 5 6 8 10
.359 .419 .537 .656
.4375 .500 .625 .750
3.125 3.125 3.375 3.375
5.000 5.000 5.250 5.250
.479 .558 .637 .716 .875
.625 .625 .750 .875 1.000
4.375 4.375 4.375 4.375 4.375
7.250 7.250 7.250 7.250 7.250
.750 .750 .875 1.000 1.125
4.375 4.375 4.375 4.375 4.375
7.500 7.500 7.500 7.500 7.500
.875 1.000 1.125 1.125 1.500
4.375 4.375 4.375 4.375 4.375
7.750 7.750 7.750 7.750 7.750
DIAMETRAL PITCH .575 .670 .765 .860 1.050
OVERALL LENGTH FACE
STEM LENGTH
STEM DIA
09696 09698 09700 09702
DIAMETRAL PITCH .718 .837 .956 1.075 1.312
09734 09736 09738 09740 09742
TOLERANCE +.0000 – .0015
NFR5 NFR6 NFR7 NFR8 NFR10
09768 09770 09772 09774 09776
FACE = 2.500"
6
DIAMETRAL PITCH .958 1.116 1.433 1.750
NDR5 NDR6 NDR7 NDR8 NDR10
DIMENSION STEM DIA. All
FACE = 2.250"
8
5 6 8 10
NBR5 NBR6 NBR8 NBR10
FACE = 2.000"
10
5 6 7 8 10
PITCH DIA (SPL)
STANDARD TOLERANCES
DIAMETRAL PITCH
5 6 7 8 10
09654 09656 09658 09660
FACE = 1.375"
12
5 6 7 8 10
Item Code
NHR5 NHR6 NHR7 NHR8 NHR10
09796 09798 09800 09802 09804
FACE = 3.000" 1.250 1.375 1.625 2.000
4.375 4.375 5.000 5.375
8.500 8.500 9.000 9.500
NJR5 NJR6 NJR8 NJR10
09822 09824 09826 09828
*Used for calculating Center Distance, not ratio.
P-1930-BG
04/10
Boston Gear 800-825-6544
33
Drawn Pinion Wire 48, 32 and 24 Diametral Pitch (Brass & Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
A
Pitch Dia.
Catalog Number
Item Code
48
DIAMETRAL PITCH
Drawn Pinion Wire, teeth not generated. All Pinion Wire is stocked in 4 foot pieces. Other lengths can be furnished on special order. Price on application.
6 8 9 10 12 14 15 16 18
.125 .167 .188 .208 .250 .292 .312 .333 .375
6 8 9 10 12 14 15 16 18
.125 .167 .188 .208 .250 .292 .312 .333 .375
BRASS G24 G25 G26 G27 G29 G30 G31 G32 G33 STEEL GS24 GS25 GS26 GS27 GS29 GS30 GS31 GS32 GS33
36900 36902 36904 36906 36908 36910 36912 36914 36916 36954 36956 36958 36960 36962 36964 36966 36968 36970
32
DIAMETRAL PITCH 6 8 9 10 11 12 14 15 16
.188 .250 .281 .312 .344 .375 .438 .469 .500
6 8 9 10 11 12 14 15 16
.188 .250 .281 .312 .344 .375 .438 .469 .500
BRASS G39 G40 G41 G42 G43 G44 G45 G46 G47 STEEL GS39 GS40 GS41 GS42 GS43 GS44 GS45 GS46 GS47
36918 36920 36922 36924 36926 36928 36930 36932 36934 36972 36974 36976 36978 36980 36982 36984 36986 36988
24
DIAMETRAL PITCH
34
Boston Gear 800-825-6544
6 9 10 12 14 15 16
.250 .375 .417 .500 .583 .625 .667
6 8 9 10 11 12 14 15 16
.250 .333 .375 .417 .458 .500 .583 .625 .667
BRASS G54 G56 G57 G59 G60 G61 G62 STEEL GS54 GS55 GS56 GS57 GS58 GS59 GS60 GS61 GS62
36936 36940 36942 36946 36948 36950 36952 36990 36992 36994 36996 36998 37000 37002 37004 37006
P-1930-BG
04/10
Rack 48 through 3 Diametral Pitch (Nylon & Steel) 14-1/2° Pressure Angle (will not operate with 20° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Pitch Nom- Mating Nylon Steel Overall Line inal Spur Thick- to Back Length Gear Catalog Item Catalog Item ness (B) (Feet) Page # Number Code Number Code 48 DIAMETRAL PITCH FACE WIDTH = .125" 1 18 2 32 DIAMETRAL PITCH .125
.104
A
GP586-1 53899 – – – – L501-2 12726 FACE WIDTH = .188"
1 GP583-1 53900 – – 2 18, 19 – – L503-2 12728 4 – – L503-4 12730 24 DIAMETRAL PITCH FACE WIDTH = .250" .188
.156
1 GP579-1 53901 – – 2 19, 20 – – L505-2 12732 4 – – L505-4 12734 20 DIAMETRAL PITCH FACE WIDTH = .375" .250
.208
2 .375 .325 4 20, 21 6 16 DIAMETRAL PITCH
– – –
– L509-2 12736 – L509-4 12738 – L509-6 12740 *FACE WIDTH = .313"
2 4 21, 22 4 .500 .438 6 12 DIAMETRAL PITCH
– – – –
– L510-2 12742 – L510-4 12744 – L512-4 12746 – L512-6 12748 FACE WIDTH = .750"
4 6 22, 23 .750 .667 4 6 10 DIAMETRAL PITCH
– – – –
– L514-4 12750 – L514-6 12752 – L515-4 12754 – L515-6 12756 FACE WIDTH = 1.000"
4 6 23, 24 4 1.000 .900 6 8 DIAMETRAL PITCH
– – – –
– L516-4 37324 – L516-6 37326 – L517-4 37328 – L517-6 37330 FACE WIDTH = 1.250"
4 6 24, 25 4 1.250 1.125 6 6 DIAMETRAL PITCH
– – – –
– L518-4 37332 – L518-6 37334 – L519-4 37336 – L519-6 37338 FACE WIDTH = 1.500"
4 6 25, 26 4 1.500 1.333 6 5 DIAMETRAL PITCH
– – – –
– L520-4 37340 – L520-6 37342 – L521-4 37344 – L521-6 37346 FACE WIDTH = 1.750"
4 1.250 1.050 26 6 4 DIAMETRAL PITCH
– –
– L522-4 37348 – L522-6 37350 FACE WIDTH = 2.000"
4 27 6 DIAMETRAL PITCH
– –
– L523-4 37352 – L523-6 37354 FACE WIDTH = 3.000"
– –
– –
.312
.500
.625
.750
1.000
1.500 3
1.500
.250
.417
.525
.625
.833
1.250
1.167
4 6
27
*Face Width of L512-4 and L512-6 = 1/2".
P-1930-BG
04/10
L524-4 L524-6
37356 37358
PITCH LINE TO BACK (B)
WIDTH
OVERALL THICKNESS
LENGTH
STANDARD TOLERANCES ‡ DIMENSION LENGTH† All 1/8 – 3/4 FACE 1 – 1-1/2 WIDTH 1-3/4 – 2 3
TOLERANCE + 1.00 – .000 + .000 – .002 + .000 – .003 + .000 – .004 + .000 – .006
†Ends not machined. Tolerance allows for cutting and matching. Nylon Rack is molded in proper lengths to permit end to end butting without interruption of tooth spacing. ‡Steel only.
PITCH DIA OF GEAR (D) GEAR CENTER LINE TO BACK OF RA B+D 2
FACE WIDTH CK
OVERALL THICKNESS
LENGTH PITCH LINE TO BACK (B)
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
Boston Gear 800-825-6544
35
Internal Gears 48 through 16 Diametral Pitch (Brass) 14-1/2° Pressure Angle (will not operate with 20° spurs) ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
A
Pitch Dia.
O.D.
I.D.
Catalog Number
1.500 2.000 2.750 3.750
.986 1.486 1.986 2.986
G632 G633 G635 G637
2.000 2.750 3.750 4.750 6.750
1.480 1.980 2.980 3.980 5.980
G664 G666 G668 G669 G670
2.250 2.750 3.750 4.750 6.750
1.474 1.974 2.974 3.974 5.974
G675 G677 G679 G680 G681
2.750 3.750 4.750 6.750
1.962 2.962 3.962 5.962
G689 G691 G692 G693
Item Code
48 DIAMETRAL PITCH 48 72 96 144
1.000 1.500 2.000 3.000
FACE = .125" 12066 12068 12070 12072
32 DIAMETRAL PITCH 48 64 96 128 192
FACE
1.500 2.000 3.000 4.000 6.000
FACE = .188" 12056 12058 12060 12062 12064
24 DIAMETRAL PITCH PITCH DIA.
INSIDE DIA.
OUTSIDE DIA.
36 48 72 96 144
1.500 2.000 3.000 4.000 6.000
FACE = .250" 12046 12048 12050 12052 12054
16 DIAMETRAL PITCH
STANDARD TOLERANCES DIMENSION 48 Pitch I.D. 32 Pitch 24 Pitch 16 Pitch O.D. All
All All All All
TOLERANCE +.004 – .000 +.005 – .000 +.006 – .000 +.008 – .000 +.001 + .003
32 48 64 96
2.000 3.000 4.000 6.000
FACE = .313" 12038 12040 12042 12044
PINION PITCH DIA. (d) CENTER DISTANCE GEAR PITCH DIA. (D)
CENTER = D – d DISTANCE 2
NOTE: The difference in tooth numbers between Gear and Pinion should not be less than 15.
36
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears 64 and 48 Diametral Pitch (Delrin & Brass) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Style See Page 315
Hub Pitch Dia.
Bore
Dia.
Proj.
Without Keyway or Setscrew Catalog Item Number Code
A
Face = .125" Outside Dia. = Pitch Dia. + .033" Overall Length = .125" + Hub Proj.
64
DIAMETRAL PITCH BRASS 16 18 20 24 28 32 36 40 44 48 52 56 60 64 72 80 88 96 112 128 144 160 192
.250 .281 .312 .375 .438 .500 .562 .625 .688 .750 .812 .875 .938 1.000 1.125 1.250 1.375 1.500 1.750 2.000 2.250 2.500 3.000
.125
.1875
.250
.3125
.19 .22 .25 .28 .34 .38 .44 .44 .50 .50 .56 .56 .62 .62 .69 .69 .75 .75 .81 .88 .75 .75 .88
.19
.25
A
.25
.31
C
Y6416 Y6418 Y6420 Y6424 Y6428 Y6432 Y6436 Y6440 Y6444 Y6448 Y6452 Y6456 Y6460 Y6464 Y6472 Y6480 Y6488 Y6496 Y64112 Y64128 Y64144 Y64160 Y64192
09482 09484 09486 09488 09490 09492 09494 09496 09498 09500 09502 09504 09506 09508 09510 09512 09514 09516 09518 09520 09522 09524 09526
Face = .125" Outside Dia. = Pitch Dia. + .042" Overall Length = .125" + Hub Proj.
48 DIAMETRAL PITCH
MOLDED DELRIN 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42
P-1930-BG
.375 .396 .417 .438 .458 .479 .500 .521 .542 .562 .583 .604 .625 .646 .667 .688 .708 .729 .750 .771 .792 .813 .833 .875
04/10
.31 .34 .38 .1562
.41
.25
.45 .48 .50
.1875
.55
A
.25
YP4818 YP4819 YP4820 YP4821 YP4822 YP4823 YP4824 YP4825 YP4826 YP4827 YP4828 YP4829 YP4830 YP4831 YP4832 YP4833 YP4834 YP4835 YP4836 YP4837 YP4838 YP4839 YP4840 YP4842
53902 53903 53904 53905 53906 53907 53908 53909 53910 53911 53912 53913 53914 53915 53916 53917 53918 53919 53920 53921 53922 53923 53924 53925
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
48 D.P.
TOLERANCE ±.0005
64 D.P.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
Boston Gear 800-825-6544
37
Spur Gears 48 Diametral Pitch (Delrin) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Style See Page 315
Hub Pitch Dia.
Bore
Dia.
Proj.
Without Keyway or Setscrew † Catalog Item Number Code
Face = .125" Outside Dia. = Pitch Dia. + .042" Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
MOLDED DELRIN
HUB PROJ.
FACE
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD
TOLERANCES*
DIMENSION BORE
All
TOLERANCE +.001 – .000
*Gears with Brass Inserts only.
48 D.P.
REFERENCE PAGES Alterations — 314 Materials — 315 †All YPB gears have setscrews.
38
BORE
SETSCREW
1/8
#2-56
3/16
#4-40
1/4
#6-32
Boston Gear 800-825-6544
44 45 48 52 54 56 60 64 66 72 80 84 96 100 108 120
.917 .938 1.000 1.083 1.125 1.168 1.250 1.333 1.375 1.500 1.667 1.750 2.000 2.083 2.250 2.500
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 44 45 48 52 54 56 60 64 66 72 80 84 96 100 108 120
.375 .396 .417 .438 .458 .479 .500 .521 .542 .562 .583 .604 .625 .646 .667 .688 .708 .729 .750 .771 .792 .813 .833 .875 .917 .938 1.000 1.083 1.125 1.168 1.250 1.333 1.375 1.500 1.667 1.750 2.000 2.083 2.250 2.500
YP4844 YP4845 YP4848 YP4852 YP4854 YP4856 YP4860 YP4864 .250 .61 .25 B YP4866 YP4872 YP4880 YP4884 YP4896 YP48100 YP48108 YP48120 MOLDED DELRIN WITH BRASS INSERTS .188
.55
.31 .34 .125 .38 .40 .45 .48 .50
A
.188 .55
.250
.61
.25
B
YPB4818 YPB4819 YPB4820 YPB4821 YPB4822 YPB4823 YPB4824 YPB4825 YPB4826 YPB4827 YPB4828 YPB4829 YPB4830 YPB4831 YPB4832 YPB4833 YPB4834 YPB4835 YPB4836 YPB4837 YPB4838 YPB4839 YPB4840 YPB4842 YPB4844 YPB4845 YPB4848 YPB4852 YPB4854 YPB4856 YPB4860 YPB4864 YPB4866 YPB4872 YPB4880 YPB4884 YPB4896 YPB48100 YPB48108 YPB48120
53926 53927 53928 53929 53930 53931 53932 53933 53934 53935 53936 53937 53938 53939 53940 53941 53942 53943 53944 53945 53946 53947 53948 53949 53950 53951 53952 53953 53954 53955 53956 53957 53958 53959 53960 53961 53962 53963 53964 53965 53966 53967 53968 53969 53970 53971 53972 53973 53974 53975 53976 53977 53978 53979 53980 53981
P-1930-BG
04/10
Spur Gears 48 and 32 Diametral Pitch (Delrin & Brass) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Style See Page 315
Hub Pitch Dia.
Bore
Dia.
Proj.
Without Keyway or Setscrew Catalog Item Number Code
A
Face = .125" Outside Dia. = Pitch Dia. + .042" Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH BRASS 12 15 18 21 24 27 30 36 42 48 54 60 66 72 84 96 120 144 192
.250 .312 .375 .438 .500 .562 .625 .750 .875 1.000 1.125 1.250 1.375 1.500 1.750 2.000 2.500 3.000 4.000
.125
.1875
.250
.3125
.18 .22 .28 .35 .38 .44 .44 .50 .57 .63 .69 .69 .75 .75 .82 .88 .75 .88 1.00
.19
.25 A
.25
.31
C
Y4812 Y4815 Y4818 Y4821 Y4824 Y4827 Y4830 Y4836 Y4842 Y4848 Y4854 Y4860 Y4866 Y4872 Y4884 Y4896 Y48120 Y48144 Y48192
09444 09446 09448 09450 09452 09454 09456 09458 09460 09462 09464 09466 09468 09470 09472 09474 09476 09478 09480
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
Face = .188" Outside Dia. = Pitch Dia. + .062" Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN 12 14 15 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 48 52 56 64 72 80 96
P-1930-BG
.375 .438 .469 .500 .562 .625 .688 .750 .812 .875 .938 1.000 1.062 1.125 1.187 1.250 1.312 1.375 1.500 1.625 1.750 2.000 2.250 2.500 3.000
04/10
.1562
.28 .31 .31
.31
.34 .47
A
.50 .1875
.250
.56 .50 .56 .63
.61
.31
.31
.63
B
.67 .3125
.31 .81
YP3212 YP3214 YP3215 YP3216 YP3218 YP3220 YP3222 YP3224 YP3226 YP3228 YP3230 YP3232 YP3234 YP3236 YP3238 YP3240 YP3242 YP3244 YP3248 YP3252 YP3256 YP3264 YP3272 YP3280 YP3296
53982 53983 53984 53985 53986 53987 53988 53989 53990 53991 53992 53993 53994 53995 53996 53997 53998 53999 54000 54001 54002 54003 54004 54005 54006
STANDARD TOLERANCES* DIMENSION BORE All
TOLERANCE ±.0005˜
*Brass only.
48 D.P.
32 D.P.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
Boston Gear 800-825-6544
39
Spur Gears 32 Diametral Pitch (Delrin & Brass) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Hub Pitch Dia.
Bore
Dia.
Proj.
Without Keyway or Setscrew † Catalog Item Number Code
Style See Page 315
Face = .188" Outside Dia. = Pitch Dia. + .062" Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN with BRASS INSERTS
HUB PROJ.
FACE
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION
TOLERANCE Brass BORE All ± .0005 Delrin with Brass Inserts BORE All + .001 – .000
32 D.P.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315 †All YPB gears have setscrew and spot drill.
40
BORE
SETSCREW
1/8
#2-56
3/16
#4-40
1/4
#6-32
5/16
#8-32
Boston Gear 800-825-6544
12 14 15 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 48 52 56 64 72 80 96
.375 .438 .469 .500 .562 .625 .688 .750 .812 .875 .938 1.000 1.062 1.125 1.187 1.250 1.312 1.375 1.500 1.625 1.750 2.000 2.250 2.500 3.000
12 14 16 18 20 24 28 32 36 40 48 56 64 72 80 96 112 128 160
.375 .438 .500 .562 .625 .750 .875 1.000 1.125 1.250 1.500 1.750 2.000 2.250 2.500 3.000 3.500 4.000 5.000
.125
.1875
.250
.3125
.125
.1875
.250
.3125
.28 .31 .31 .34 .34 .47 .50 .50 .56 .50 .56 .63 .31 .61 .61 .61 .61 .61 .61 .63 .67 .67 .67 .81 .81 .81 BRASS .28 .34 .40 .43 .47 .53 .59 .66 .72 .72 .78 .84 .90 .88 .88 1.00 1.00 1.00 1.00
A
B
.25
.25 A .25
.25
.31
C
YPB3212 YPB3214 YPB3215 YPB3216 YPB3218 YPB3220 YPB3222 YPB3224 YPB3226 YPB3228 YPB3230 YPB3232 YPB3234 YPB3236 YPB3238 YPB3240 YPB3242 YPB3244 YPB3248 YPB3252 YPB3256 YPB3264 YPB3272 YPB3280 YPB3296
54007 54008 54009 54010 54011 54012 54013 54014 54015 54016 54017 54018 54019 54020 54021 54022 54023 54024 54025 54026 54027 54028 54029 54030 54031
Y3212 Y3214 Y3216 Y3218 Y3220 Y3224 Y3228 Y3232 Y3236 Y3240 Y3248 Y3256 Y3264 Y3272 Y3280 Y3296 Y32112 Y32128 Y32160
09406 09408 09410 09412 09414 09416 09418 09420 09422 09424 09426 09428 09430 09432 09434 09436 09438 09440 09442
P-1930-BG
04/10
Spur Gears 24 Diametral Pitch (Delrin) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Style See Page 315
Hub Pitch Dia.
Bore
Dia.
Proj.
Without Keyway or Setscrew† Catalog Item Number Code
A
Face = .250" Outside Dia. = Pitch Dia. + .083" Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH
MOLDED DELRIN 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 32 33 34 36 39 40 42 44 45 48 50 52 54 56 60
.500 .583 .625 .667 .709 .750 .791 .833 .875 .917 .959 1.000 1.041 1.083 1.125 1.167 1.250 1.333 1.375 1.416 1.500 1.625 1.666 1.750 1.833 1.875 2.000 2.083 2.166 2.250 2.333 2.500
12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 32 33 34 36 39 40 42
.500 .583 .625 .667 .709 .750 .791 .833 .875 .917 .959 1.000 1.041 1.083 1.125 1.167 1.250 1.333 1.375 1.416 1.500 1.625 1.666 1.750
P-1930-BG
04/10
.38 .44
YP2412 YP2414 YP2415 .48 YP2416 YP2417 .188 A YP2418 YP2419 .55 YP2420 YP2421 YP2422 YP2423 .63 YP2424 .61 YP2425 YP2426 YP2427 .63 .250 YP2428 .31 YP2430 YP2432 .61 YP2433 YP2434 .63 YP2436 B YP2439 YP2440 YP2442 YP2444 YP2445 .313 .67 YP2448 YP2450 YP2452 YP2454 YP2456 YP2460 MOLDED DELRIN WITH BRASS INSERTS .38 .44 .48 .188
A .55 .31 .63 .61
.250
.63 B .61 .63
.313
.67
YPB2412 YPB2414 YPB2415 YPB2416 YPB2417 YPB2418 YPB2419 YPB2420 YPB2421 YPB2422 YPB2423 YPB2424 YPB2425 YPB2426 YPB2427 YPB2428 YPB2430 YPB2432 YPB2433 YPB2434 YPB2436 YPB2439 YPB2440 YPB2442
54032 54033 54034 54035 54036 54037 54038 54039 54040 54041 54042 54043 54044 54045 54046 54047 54048 54049 54050 54051 54052 54053 54054 54055 54056 54057 54058 54059 54060 54061 54062 54063 54064 54065 54066 54067 54068 54069 54070 54071 54072 54073 54074 54075 54076 54077 54078 54079 54080 54081 54082 54083 54084 54085 54086 54087
HUB PROJ.
FACE
PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES* DIMENSION BORE
All
TOLERANCE +.001 – .000
*Gears with Brass Inserts only.
24 D.P.
REFERENCE PAGES Alterations — 314 Materials — 315 †All YPB gears have setscrew and spot drill.
BORE
SETSCREW
3/16
#4-40
1/4
#6-32
5/16
#8-32
Boston Gear 800-825-6544
41
Spur Gears 24 and 20 Diametral Pitch (Delrin, Brass, Steel & Cast Iron) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub Pitch Dia.
Bore
Dia.
With Keyway and Setscrew† Catalog Item Number Code
Face = .250" Outside Dia. = Pitch Dia. + .083" DIAMETRAL PITCH Overall Length = .250" + Hub Proj. MOLDED DELRIN WITH BRASS INSERTS 44 1.833 YPB2444 54088 – – 45 1.875 YPB2445 54089 – – 48 2.000 YPB2448 54090 – – 50 2.083 YPB2450 54091 – – .3125 .67 .31 B 52 2.166 YPB2452 54092 – – 54 2.250 YPB2454 54093 – – 56 2.333 YPB2456 54094 – – 60 2.500 YPB2460 54095 – – BRASS 12 .500 .38 Y2412 09372 – – 15 .625 .50 Y2415 09374 – – .1875 .25 18 .750 .54 Y2418 09376 – – 21 .875 .60 Y2421 09378 – – A 24 1.000 .66 Y2424 09380 – – 27 1.125 .73 Y2427 09382 – – .250 .25 30 1.250 .73 Y2430 09384 – – 36 1.500 .79 Y2436 09386 – – 42 1.750 .86 .25 Y2442 09388 – – 48 2.000 .92 Y2448 09390 – – .3125 54 2.250 .88 .31 Y2454 09392 – – 60 2.500 .88 Y2460 09394 – – 72 3.000 Y2472 09396 – – 84 3.500 .31 C Y2484 09398 – – 96 4.000 .375 1.00 Y2496 09400 – – 120 5.000 Y24120 09402 – – .38 144 6.000 Y24144 09404 – –
24
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION TOLERANCE Brass, Steel and Cast Iron BORE All ± .0005 Delrin with Brass Inserts BORE All + .001 – .000
24 D.P.
20 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 58 Lubrication — 314 Materials — 315 Selection Procedure — 49 †YPB gears have one setscrew (#8-32), no keyway. *5/16" bore have #35 (.110) drilled hole through one wall, no keyway. ‡3/8" bore have one setscrew. No keyway. 1/2" bore and larger have standard keyway at 90° to setscrew. See Page 315.
42
Boston Gear 800-825-6544
Face = .500" Outside Dia. = Pitch Dia. + .100" Overall Length = .500" + Hub Proj.
20
DIAMETRAL PITCH STEEL 12 14 15 16 18 20 24 25 30 35
.600 .700 .750 .800 .900 1.000 1.200 1.250 1.500 1.750
40
2.000
.500 .625 .750
1.72
45 50 60 70
2.250 2.500 3.000 3.500
.500
1.97 1.62 2.12 2.38
80 84 90 100 120 140 160 180 200
4.000 4.200 4.500 5.000 6.000 7.000 8.000 9.000 10.000
.625
1.38
.625
1.50
.625
1.75
.3125 .375
.500
.46 .56 .60 .66 .74 .84 .92 .97 1.22 1.47
YA12 YA14 YA15 .44 YA16 YA18 YA20 YA24 .44 A YA25 YA30 .50 YA35 YA40 .50 – – YA45 YA50A .50 YA60A YA70A CAST IRON C YA80 .62 B YA84 YA90 C YA100 YA120 .62 YA140 D YA160 YA180 .75 YA200
.44
09892 09894 09896 09898 09900 09902 09914 09904 09906 09908 09910 – – 09912 10548 10550 10552
YA12-5/16* YA14-5/16* YA15-3/8‡ YA16-3/8‡ YA18-3/8‡ YA20-1/2 YA24-1/2 YA25-1/2 YA30-1/2 YA35-1/2 YA40-1/2 YA40-5/8 YA40-3/4 – – – –
46128 46129 46130 46131 46132 46133 46134 46135 46136 46137 46138 46139 46140 – – – –
10554 10556 10558 10560 10562 10564 10566 10568 10570
– – – – – – – – –
– – – – – – – – –
P-1930-BG
04/10
Spur Gears 16 and 12 Diametral Pitch (Steel & Cast Iron) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
No. of Teeth
Pitch Dia.
Bore
Dia.
With Keyway and Setscrew† Catalog Item Number Code
A
Face = .750" Outside Dia. = Pitch Dia. + .125" Overall Length = .750" + Hub Proj.
16
DIAMETRAL PITCH STEEL 12 14
.750 .875
.375
.56 .69
.50
15
.938
.375 .500
.75
.50
16 18 20
1.000 1.125 1.250
.500
.81 .94 1.05
.50
24
1.500
1.20
.50
28
1.750
1.45
.50
30
1.875
1.58
.50
32
2.000
36 40 48 56 60 64 72 80
2.250 2.500 3.000 3.500 3.750 4.000 4.500 5.000
.625 .625 .750 .625 .750 .625 .750 .875 .625 .750 .875 1.000 .625
.750
.50
A 1.70
.50
1.95 2.20 2.00 2.50 2.75 2.88 3.38 3.88
.50 .62
.75
YB12 YB14 YB15 – YB16 YB18 YB20 YB24 – YB28 – YB30 – – YB32 – – – YB36 YB40 YB48A YB56A YB60A YB64A YB72A YB80A
09916 09918 09920 – 09922 09924 09926 09928 – 09930 – 09932 – – 09934 – – – 09936 09938 10572 10574 10576 10578 10580 10582
YB12-3/8† YB14-3/8† YB15-3/8† YB15-1/2 YB16-1/2 YB18-1/2 YB20-5/8 YB24-5/8 YB24-3/4 YB28-5/8 YB28-3/4 YB30-5/8 YB30-3/4 YB30-7/8 YB32-5/8 YB32-3/4 YB32-7/8 YB32-1 – – – – – – – –
46141 46142 45991 46143 46144 46145 46146 46147 46148 46149 46150 46151 46152 46153 46154 46155 46156 46157 – – – – – – – –
CAST IRON 96 128 144 160 192
6.000 8.000 9.000 10.000 12.000
.750
1.75 2.00 2.00
.75
.875
2.00
.75 1.00
D
12
DIAMETRAL PITCH
YB96 10584 – – YB128 10588 – – YB144 10590 – – YB160 10592 – – YB192 10594 – – Face = 1.000" Outside Dia. = Pitch Dia. + .167" Overall Length = 1.000" + Hub Proj.
STEEL 12 13 14 15 16 18 20
1.000 1.083 1.167 1.250 1.333 1.500 1.667
.500
21
1.750
24
2.000
28
2.333
.750 .875 .750 .875 1.000 .750 .875 1.000
30 36 42 48 54
2.500 3.000 3.500 4.000 4.500
P-1930-BG
04/10
.625 .750
.750 .875
.75 .83 .92 .99 1.07 1.24 1.32
.62
.62
1.40
.62
1.65
.62
1.99
.62
2.15 1.94 2.44 2.88 3.38
.62 .88
.62
.88
A
YD12 YD13 YD14 YD15 YD16 YD18 YD20 YD21 – YD24 – – YD28 – – YD30 YD36A YD42A YD48A YD54A
09940 09942 09944 09946 09948 09950 09952 09954 – 09956 – – 09958 – – 09960 10596 10598 10600 10602
YD12-1/2* YD13-5/8‡ YD14-5/8 YD15-5/8 YD16-5/8 YD18-3/4 YD20-3/4 YD21-3/4 YD21-7/8 YD24-3/4 YD24-7/8 YD24-1 YD28-3/4 YD28-7/8 YD28-1 – – – – –
46158 46159 46160 46161 46162 46163 46164 46165 46166 46167 46168 46169 46170 46171 46172 – – – – –
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
16 D.P.
TOLERANCE ±.0005
12 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 58, 59 Lubrication — 314 Materials — 315 Selection Procedure — 49 †3/8" bore have one setscrew. No keyway. YB15-1/2 and larger have standard keyway at 90° to setscrew. See page 315. *YD12-1/2 has one setscrew. No keyway. ‡YD13-5/8 has one setscrew. No keyway. YD14-5/8 bore and larger have standard keyway at 90° to setscrew.
Boston Gear 800-825-6544
43
Spur Gears 12 and 10 Diametral Pitch (Cast Iron & Steel) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Pitch Dia.
Bore
Dia.
DIAMETRAL PITCH
FACE
HUB PROJ.
5.000 5.500 6.000 7.000 8.000 9.000 10.000 11.000 12.000 14.000 16.000 18.000
.875
2.12 2.25 2.25
1.000
2.50 2.75
10 PITCH DIA.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
12 D.P.
TOLERANCE ±.0005
10 D.P.
DIAMETRAL PITCH 12 14 15 16
1.200 1.400 1.500 1.600
.625
18
1.800
1.42
20
2.000
24
2.400
25
2.500
28
2.800
.750 .875 .875 1.000 .875 1.000 .875 1.000 .875 1.000
30 35 40 45 48 50
3.000 3.500 4.000 4.500 4.800 5.000
.875
2.00 2.50 2.95 3.45 3.75 3.95
55 60 70 80 90 100 120 140 160 200
5.500 6.000 7.000 8.000 9.000 10.000 12.000 14.000 16.000 20.000
.750
1.000
1.000
1.125
With Keyway and Setscrew† Catalog Item Number Code
Face = 1.000" Outside Dia. = Pitch Dia. + .166" Overall Length = 1.000" + Hub Proj.
12
60 66 72 84 96 108 120 132 144 168 192 216
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
.92 1.12 1.22 1.32
1.62 2.02 2.12 2.42
2.50
3.00 3.25
CAST IRON B YD60 10604 – – YD66 10606 – – .88 YD72 10608 – – YD84 10610 – – YD96 10612 – – YD108 10614 – – .88 D YD120 10616 – – YD132 10618 – – YD144 10620 – – 1.00 YD168 10622 – – YD192 10624 – – YD216 10626 – – Face = 1.250" Outside Dia. = Pitch Dia. + .200" Overall Length = 1.250" + Hub Proj. STEEL YF12 09962 YF12-5/8 46173 .62 YF14 09964 YF14-5/8 46174 YF15 09966 YF15-3/4 46175 .62 YF16 09968 YF16-3/4 46176 YF18 09970 YF18-3/4 46177 .62 – – YF18-7/8 46178 YF20 09972 YF20-7/8 46179 .62 – – YF20-1 46180 A YF24 09974 YF24-7/8 46181 .62 – – YF24-1 46182 YF25 09976 YF25-7/8 46183 .62 – – YF25-1 46184 YF28 09978 YF28-7/8 46185 .62 – – YF28-1 46186 YF30A 10630 – – .88 YF35A 10632 – – YF40A 10634 – – YF45A 10636 – – .88 YF48A 10638 – – YF50A 10640 – – CAST IRON YF55 10642 – – B YF60 10644 – – 1.00 YF70 10646 – – YF80 10648 – – YF90 10650 – – D YF100 10652 – – YF120 10656 – – 1.12 YF140 10658 – – YF160 10660 – – 1.25 YF200B 10664 – –
†All gears have standard keyway at 90° to setscrew. See Page 315.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 59, 60 Lubrication — 314 Materials — 315 Selection Procedure — 49
44
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears 8 and 6 Diametral Pitch (Steel & Cast Iron) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub
No. of Teeth
Pitch Dia.
Bore
Dia.
With Keyway and Setscrew† Catalog Item Number Code
A
Face = 1.500" Outside Dia. = Pitch Dia. + .250" Overall Length = 1.500" + Hub Proj.
8
DIAMETRAL PITCH STEEL 12 14
1.500 1.750
.750
1.12 1.31
15
1.875
1.43
16
2.000
18
2.250
20
2.500
22
2.750
.750 .875 .875 1.000 .875 1.000 1.125 .875 1.000 1.125 .875 1.000 1.125 .875 1.000 1.125 .875
24
3.000
28 32 36
3.500 4.000 4.500
40 44 48 56 60 64 72 80 88 96 112 120 128
5.000 5.500 6.000 7.000 7.500 8.000 9.000 10.000 11.000 12.000 14.000 15.000 16.000
1.56 1.81 2.06 2.31 2.56
1.000
3.06 3.00 3.50
1.000
2.50
3.00 1.125 3.25
6
DIAMETRAL PITCH
YH12 09980 YH12-3/4 46187 YH14 09982 YH14-3/4 46188 YH15 09984 YH15-3/4 46189 .75 – – YH15-7/8 46190 YH16 09986 YH16-7/8 46191 .88 – – YH16-1 46192 YH18 09988 YH18-7/8 46193 .88 A – – YH18-1 46194 – – YH18-1-1/8 46195 YH20 09990 YH20-7/8 46196 .88 – – YH20-1 46197 – – YH20-1-1/8 46198 YH22 09992 YH22-7/8 46199 .88 – – YH22-1 46200 – – YH22-1-1/8 46201 YH24 09994 YH24-7/8 46202 .88 – – YH24-1 46203 – – YH24-1-1/8 46204 .88 YH28 09996 – – YH32C 10666 – – .88 YH36C 10668 – – CAST IRON YH40B 10670 – – B YH44B 10672 – – YH48B 10674 – – 1.00 YH56B 10676 – – C YH60 10678 – – YH64B 10680 – – YH72B 10682 – – YH80B 10684 – – D YH88B 10686 – – YH96B 10688 – – 1.25 YH112B 10690 – – YH120 10692 – – YH128B 10694 – – Face = 2.000" Outside Dia. = Pitch Dia. + .333" Overall Length = 2.000" + Hub Proj. .75
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
STEEL 12
2.000
14
2.333
15
2.500
1.000 1.000 1.125 1.000 1.125 1.1875 1.250
1.46
.88
1.79
.88
1.96
.88
A
YJ12 YJ14 – YJ15 – – –
09998 10000 – 10002 – – –
YJ12-1 YJ14-1 YJ14-1-1/8 YJ15-1 YJ15-1-1/8 YJ15-1-3/16 YJ15-1-1/4
46205 46206 46207 46208 46209 46210 46211
8 D.P.
6 D.P.
†All gears have standard keyway at 90° to setscrew. See Page 315.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 60, 61 Lubrication — 314 Materials — 315 Selection Procedure — 49
P-1930-BG
04/10
Boston Gear 800-825-6544
45
Spur Gears 6 and 5 Diametral Pitch (Steel & Cast Iron) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
No. of Teeth
Style Without Keyway or Setscrew See Page Catalog Item Proj. 315 Number Code
Hub Pitch Dia.
Bore
Dia.
With Keyway and Setscrew† Catalog Item Number Code
Face = 2.000" Outside Dia. = Pitch Dia. + .333" Overall Length = 2.000" + Hub Proj.
6
DIAMETRAL PITCH STEEL
FACE
PITCH DIA.
HUB PROJ.
HUB DIA.
BORE
OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
16
2.667
18
3.000
21
3.500
24 27 30
4.000 4.500 5.000
33 36 42 48 54 60 66 72 84 96 108 120
5.500 6.000 7.000 8.000 9.000 10.000 11.000 12.000 14.000 16.000 18.000 20.000
1.000 1.125 1.1875 1.250 1.000 1.125 1.1875 1.250 1.000 1.125 1.1875 1.250
2.13
2.46
2.96
1.125
3.00 3.50 4.00
1.125
3.00 3.50
1.250
3.50
1.250
4.00
1.375
4.50
5
DIAMETRAL PITCH
YJ16 10004 YJ16-1 46212 – – YJ16-1-1/8 46213 – – YJ16-1-3/16 46214 – – YJ16-1-1/4 46215 YJ18 10006 YJ18-1 46216 – – YJ18-1-1/8 46217 .88 – – YJ18-1-3/16 46218 – – YJ18-1-1/4 46219 A YJ21 10008 YJ21-1 46220 – – YJ21-1-1/8 46221 .88 – – YJ21-1-3/16 46222 – – YJ21-1-1/4 46223 YJ24A 10704 – – .88 YJ27A 10706 – – YJ30C 10708 – – CAST IRON B YJ33B 10710 – – 1.50 A YJ36B 10712 – – YJ42B 10714 – – 1.50 B YJ48B 10716 – – YJ54B 10718 – – YJ60B 10720 – – C YJ66B 10722 – – YJ72B 10724 – – 1.50 YJ84B 10726 – – D YJ96B 10728 – – YJ108B 10730 – – 1.50 YJ120B 10732 – – Face = 2.500" Outside Dia. = Pitch Dia. + .400" Overall Length = 2.500" + Hub Proj. .88
STEEL
6 D.P.
5 D.P.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 61, 62 Lubrication — 314 Materials — 315 Selection Procedure — 49
12 14 15 16 18 20
2.400 2.800 3.000 3.200 3.600 4.000
24 25 28 30 35 40 45 50 60 70 80 100 110 120 140 160 180
4.800 5.000 5.600 6.000 7.000 8.000 9.000 10.000 12.000 14.000 16.000 20.000 22.000 24.000 28.000 32.000 36.000
1.125
1.78 2.18 2.38 2.58 2.98 3.38
1.125
3.75
1.250
3.75 4.00
1.375
4.38
1.500
4.75 5.00 5.00 5.00 5.50
1.625
YK12 YK14 YK15 .88 A YK16 YK18 YK20 CAST IRON YK24 YK25B 1.25 A YK28 YK30B YK35B B YK40B 1.25 YK45B C YK50 YK60 1.50 YK70B YK80B YK100 1.75 D YK110 YK120 YK140B 2.00 YK160B YK180B
10010 10012 10014 10016 10018 10020
– – – – – –
– – – – – –
10738 10740 10742 10744 10746 10748 10750 10752 10754 10756 10758 10762 10764 10766 10768 10770 10772
– – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – –
†All gears have standard keyway at 90° to setscrew. See Page 315.
46
Boston Gear 800-825-6544
P-1930-BG
04/10
Rack 20 through 4 Diametral Pitch (Steel) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Overall Thickness
Pitch Line Nominal Mating to Back Length Spur Gear (B) (Feet) Page No.
Steel Catalog Item Number Code
A
20 DIAMETRAL PITCH .500
.450
FACE WIDTH - .500” 4 6
42
L2020-4 12758 L2020-6 12760
16
DIAMETRAL PITCHFACE WIDTH - .750” 4 .750 .688 43 6
L2016-4 12762 L2016-6 12764
12 DIAMETRAL PITCH 1.000
.917
FACE WIDTH - 1.000” 4 6
43 – 44
L2012-4 37320 L2012-6 37322
10 DIAMETRAL PITCH 1.250
1.150
PITCH LINE TO BACK (B)
WIDTH
FACE WIDTH - 1.250” 4 6
44
L2010-4 37316 L2010-6 37318
8 DIAMETRAL PITCH 1.500
1.375
FACE WIDTH - 1.500” 4 6
45
L208-4 L208-6
OVERALL THICKNESS
LENGTH
37312 37314
6 DIAMETRAL PITCH 1.500
1.333
FACE WIDTH - 2.000” 4 6
45 – 46
L206-4 L206-6
37308 37310
5 DIAMETRAL PITCH 1.500
1.300
FACE WIDTH - 2.500” 4 6
46
L205-4 L205-6
37304 37306
4 DIAMETRAL PITCH 2.000
1.750
FACE WIDTH - 3.500” 4 6
–
L204-4 L204-6
37300 37302
STANDARD TOLERANCES DIMENSION LENGTH† All 1/2 – 3/4 FACE 1 – 1-1/2 WIDTH 2 – 2-1/2 3-1/2
TOLERANCE +1.000 – .000 +.000 – .002 +.000 – .003 +.000 – .004 +.000 – .006
†Ends not machined. Tolerance allows for cutting and matching.
PITCH DIA OF GEAR (D) GEAR CENTER LINE TO BACK OF RA B+D 2
FACE WIDTH CK
OVERALL THICKNESS
LENGTH PITCH LINE TO BACK (B)
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
P-1930-BG
04/10
Boston Gear 800-825-6544
47
Internal Gears 64 through 24 Diametral Pitch (Brass) 20° Pressure Angle (will not operate with 14-1⁄2° spurs) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
A
Pitch Dia.
O.D.
I.D.
DIAMETRAL PITCH 64 1.000 96 1.500 128 2.000 192 3.000
1.500 2.000 2.750 3.750
.980 1.480 1.980 2.980
FACE WIDTH - .125” YI6464 12030 YI6496 12032 YI64128 12034 YI64192 12036
1.500 2.000 2.750 3.750 4.750
.974 1.474 1.974 2.974 3.974
FACE WIDTH - .125” YI4848 12020 YI4872 12022 YI4896 12024 YI48144 12026 YI48192 12028
2.000 2.750 3.750 4.750 6.750
1.461 1.961 2.961 3.961 5.961
FACE WIDTH - .188” YI3248 12010 YI3264 12012 YI3296 12014 YI32128 12016 YI32192 12018
2.250 2.750 3.750 4.750 6.750
1.450 1.950 2.950 3.950 5.950
FACE WIDTH - .250” YI2436 12000 YI2448 12002 YI2472 12004 YI2496 12006 YI24144 12008
64
48
DIAMETRAL PITCH 48 1.000 72 1.500 96 2.000 144 3.000 192 4.000
32 FACE
PITCH DIA.
INSIDE DIA.
OUTSIDE DIA.
DIAMETRAL PITCH 48 1.500 64 2.000 96 3.000 128 4.000 192 6.000
24
DIAMETRAL PITCH 36 1.500 48 2.000 72 3.000 96 4.000 144 6.000
Catalog Number
Item Code
NOTE: The difference in tooth numbers between Gear and Pinion should not be less than 12.
STANDARD TOLERANCES DIMENSION 64 Pitch 48 Pitch I.D. 32 Pitch 24 Pitch O.D. All
All All All All
TOLERANCE +.004 – .000 +.005 – .000 +.006 – .000 +.008 – .000 +.001 + .003
PINION PITCH DIA. (d) CENTER DISTANCE GEAR PITCH DIA. (D)
CENTER = D – d DISTANCE 2
48
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Boston spur gears are designed to transmit motion or power between parallel shafts. Configurations include spur, rack, pinion wire, stem pinions and internal gears; most with a selection of bores, keyways and setscrews. Styles include plain, web, web with lightening holes or spoked. Change gears have consecutive numbers of teeth for reduction uses.
A
Boston fine-pitch spur gears are available in Delrin and Brass. Configurations include spur, rack, pinion wire and internal gears; most with a selection of bores, keyways, and setscrews. Styles include plain, web with lightening holes or spoked.
Selection Procedure
Selection Hints
1. Determine service factor. a. Using application Classification Chart, pages 322323, determine service factor or b. With knowledge of operating conditions and load classification, select service factor from Table 1 below.
A. Select pinion having pitch diameter at least twice the shaft diameter. B. Pinion number of teeth should be greater than 16 for 141⁄2°PA and 13 for 20°PA to avoid excessive undercutting. C. For tooth numbers or RPMs not on Chart, interpolation of horsepower is adequate.
Design HP = Application Load X Service Factor (Table 1) 3. Select spur gear pinion with horsepower capacity equal to (or greater than) design horsepower determined in Step 2. 141⁄2° Pressure Angle Spur Gears—Page 50 to Page 57. 20° Pressure Angle Spur Gears— Page 58 to Page 62. 4. Select a driven spur gear with a catalog rating equal to or greater than the horsepower determined in Step 2. All ratings are predicated on gears properly lubricated and maintained.
D.Pitchline velocities above 1000 FPM are not recommended for metallic spur gears. The Selection Chart reflects this in the lack of ratings for larger numbers of teeth at higher RPM’s. Ratings to the right of heavy line are not recommended, as suggested maximum velocity is exceeded, and should be used for interpolation purposes only.
TABLE 1 Service Factor .8 1.0 1.25 1.50 1.75 2.0
Operating Conditions Uniform — not more than 15 minutes in 2 hours. Moderate Shock — not more than 15 minutes in 2 hours. Uniform — not more than 10 hours per day. Moderate Shock — not more than 10 hours per day. Uniform — more than 10 hours per day. Heavy Shock — not more than 15 minutes in 2 hours. Moderate Shock — more than 10 hours per day. Heavy Shock — not more than 10 hours per day. Heavy Shock — more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher service factors. Consultation with factory is recommended in these applications.
P-1930-BG
04/10
Boston Gear 800-825-6544
49
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 32 DIAMETRAL PITCH STEEL
A
25 RPM
50 RPM
100 RPM
141⁄2° PRESSURE ANGLE 200 RPM
300 RPM
3/16" FACE
600 RPM
900 RPM
REFERENCE PAGE 19.
1200 RPM
1800 RPM
3600 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
16 18 20 22 24 26 28 30 32 40 48 56 64 80 96 128 160 192
.003 7.4 .003 8.9 .004 10.2 .005 11.7 .01 13.0 .01 14.5 .01 15.9 .01 17.3 .01 18.9 .01 24.5 .01 29.9 .01 35.7 .02 41.4 .02 52.4 .02 62.6 .03 83.9 .04 106 .05 126
.24 .27 .30 .32 .34 .37 .39 .40 .43 .48 .52 .55 .58
4.2 4.7 5.2 5.7 6.0 6.4 6.8 7.0 7.4 8.4 9.0 9.7 10.2
.01 7.3 .01 8.8 .01 10.2 .01 11.6 .01 12.9 .01 14.4 .01 15.1 .01 17.0 .01 18.7 .02 24.2 .02 29.4 .03 35 .03 40.6 .04 51 .05 60.6 .06 80.6 .08 101 .09 119
.01 7.3 .01 8.7 .02 10.1 .02 11.4 .02 12.7 .02 14.1 .02 15.5 .03 16.7 .03 18.3 .04 23.6 .05 28.5 .05 33.8 .06 38.9 .08 48.5 .09 57.1 .12 74.6 .15 92.1 .17 107
24 DIAMETRAL PITCH STEEL 25 RPM
.03 .04 .05 .05 .06 .06 .07 .07 .08 .10 .12 .14 .16 .19 .22 .27 .32 .36
7.0 8.3 9.6 10.8 11.9 13.3 14.5 15.5 16.9 21.3 25.4 29.6 33.5 40.6 46.4 57.5 67.8 75.4
.06 .07 .08 .09 .10 .12 .12 .13 .14 .18 .21 .24 .26 .31 .34 .41 .46 .50
6.6 7.8 8.9 9.9 10.9 12.0 13.1 13.9 15.2 18.7 21.8 24.9 27.8 32.5 36.2 42.7 48.6 52.4
141⁄ 2° PRESSURE ANGLE
.11 .13 .15 .16 .18 .20 .21 .22 .24 .29 .32 .36 .39 .44 .48 .54
5.9 6.9 7.8 8.7 9.4 10.2 11.0 11.7 12.6 15 17 18.9 20.7 23.3 25.1 28.3
1/4" FACE
REFERENCE PAGE 20.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P. Torque
H.P.
Torque
.22 .28 .31 .33 .38 .42 .45 .50 .60 .68 .74 .80 .89 .96
.35 .43 .46 .49 .55 .61 .63 .69 .80 .89 .94 .99
6.1 7.5 8.0 8.6 9.7 10.6 11.0 12.0 13.9 15.5 16.5 17.4
.05 .06 .07 .08 .09 .11 .11 .13 .17 .21 .24 .27 .33 .39 .48 .56 .62
10.3 13.3 14.7 16.2 19.2 22.1 23.6 27.5 35.5 43.5 50.3 57 69.6 81 100 118 131
.09 .12 .13 .14 .17 .19 .20 .23 .30 .36 .40 .45 .53 .60 .71 .80 .86
9.7 12.4 13.7 15 17.6 20.1 21.4 24.6 31.1 37.3 42.4 47.2 55.9 63.2 74.7 84.3 90.8
900 RPM
5.4 6.1 6.9 7.6 8.3 8.9 9.5 10.0 10.7 12.5 13.9 15.3 16.5 18.2 19.2
.004 .01 .01 .01 .01 .01 .01 .01 .02 .02 .02 .03 .04 .04 .06 .07 .09
.03 10.5 .04 13.6 .05 15.1 .05 16.7 .06 19.8 .07 22.9 .08 24.5 .09 28.5 .12 37.2 .15 46 .17 53.6 .19 61.3 .24 75.9 .28 89.5 .36 113 .43 135 .49 153
600 RPM
.15 .18 .20 .22 .24 .26 .27 .29 .31 .36 .40 .44 .47 .52 .55
12 14 15 16 18 20 21 24 30 36 42 48 60 72 96 120 144
.02 10.7 .02 13.9 .02 15.5 .03 17.2 .03 20.4 .04 23.7 .04 25.4 .05 29.7 .06 39.2 .08 48.8 .09 59.5 .11 66.2 .13 83.3 .16 99.8 .21 130 .25 159 .29 185
300 RPM
6.3 7.3 8.3 9.3 10.1 11.1 12.0 12.7 13.7 16.7 19.1 21.6 23.7 27.2 29.6 34 37.9 40.1
1800 RPM
10.8 14.1 15.7 17.4 20.7 24.1 25.8 30.4 40.2 50.4 59.6 68.9 87.7 106 141 175 207
200 RPM
.09 .10 .12 .13 .14 .16 .17 .18 .20 .24 .27 .31 .34 .39 .42 .49 .54 .57
No. Teeth
.01 .01 .01 .01 .02 .02 .02 .02 .03 .04 .05 .05 .07 .08 .11 .14 .16
100 RPM
7.1 8.5 9.8 11.1 12.3 13.7 14.9 16.1 17.6 22.4 26.8 31.5 36 44.2 51.2 64.9 78.2 88.4
1200 RPM
10.9 14.2 15.8 17.5 20.9 24.3 26.1 30.7 40.7 51.2 60.7 70.4 90 109 147 185 219
50 RPM
.02 .03 .03 .04 .04 .04 .05 .05 .06 .07 .09 .10 .11 .14 .16 .21 .25 .28
.13 .17 .18 .20 .23 .26 .28 .32 .40 .47 .52 .58 .67 .74 .85 .94 .99
9.2 11.6 12.8 14 16.3 18.5 19.6 22.3 27.7 32.7 36.6 40.3 46.6 51.8 59.5 65.7 69.6
.17 .21 .23 .25 .29 .33 .34 .39 .48 .55 .61 .67 .76 .84 .94 1.07
8.7 10.9 12 13.1 15.1 17.1 18.1 20.4 24.9 29.1 32.3 35.1 40 43.9 49.5 56.4
7.9 9.8 10.7 11.6 13.3 14.8 15.6 17.4 20.8 23.9 26 28 31.2 33.6
3600 RPM
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. * Torque Ratings (Lb. Ins.). Ratings for brass gears are approximately 50% of steel ratings with same face width.
50
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 20 DIAMETRAL PITCH STEEL No. Teeth
11 12 13 14 15 16 18 20 22 24 25 28 30 32 35 36 40 48 50 60 64
25 RPM
50 RPM
141⁄2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
3/8" FACE
600 RPM
900 RPM
REFERENCE PAGE 20.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.01 .01 .01 .01 .01 .02 .02 .02 .02 .03 .03 .03 .03 .04 .04 .04 .05 .06 .06 .08 .08
.66 .70 .77 .84 .90 .97 1.08 1.18 1.26 1.33 1.38 1.47 1.52 1.59 1.66 1.68 1.75
11.6 12.2 13.4 14.7 15.8 16.9 18.9 20.6 22.1 23.3 24.0 25.7 26.6 27.8 29.1 29.3 30.7
21.6 23.5 26.9 30.7 34.2 37.8 45.1 52.4 59.5 66.3 70.5 81.2 87.8 96.3 107 110 124 151 158 193 209
.02 .02 .02 .02 .03 .03 .04 .04 .05 .05 .06 .06 .07 .08 .08 .09 .10 .12 .12 .15 .16
21.4 23.4 26.8 30.5 33.9 37.5 44.7 51.9 58.8 65.4 69.5 80 86.4 94.7 105 108 122 148 154 187 203
.03 .04 .04 .05 .05 .06 .07 .08 .09 .10 .11 .12 .13 .15 .16 .17 .19 .22 .23 .28 .30
21.2 23 26.4 30 33.4 36.8 43.8 50.8 57.5 63.8 67.7 77.7 83.7 91.6 101 104 117 141 146 176 190
.07 .07 .08 .09 .10 .11 .13 .15 .17 .19 .20 .23 .25 .27 .30 .31 .34 .41 .42 .50 .54
20 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
20.7 22.5 25.7 29.1 32.3 35.7 42.3 48.7 54.9 60.8 64.4 73.4 78.9 86 94.7 97.1 108 128 133 158 169
.10 .10 .12 .13 .15 .16 .19 .22 .25 .28 .29 .33 .36 .39 .42 .43 .48 .56 .58 .68 .73
20.2 .18 18.9 21.9 .19 20.5 25 .22 23.2 28.3 .25 26.1 31.4 .27 28.8 34.5 .30 31.6 40.8 .35 36.9 46.9 .40 42 52.7 .45 46.8 58 .49 51.1 61.4 .51 53.8 69.7 .57 60.3 74.6 .61 64 81 .66 69.1 88.9 .71 74.9 91 .73 76.4 101 .79 83.5 118 .91 95.4 122 .93 98 143 1.06 112 153 1.12 118
.25 .27 .31 .35 .38 .41 .48 .54 .60 .65 .68 .76 .80 .86 .92 .94 1.02 1.14 1.17 1.31 1.37
141⁄2° PRESSURE ANGLE 200 RPM
300 RPM
600 RPM
17.8 19.2 21.6 24.2 26.6 29 33.7 38 42 45.6 47.9 53.2 56.1 60.2 64.7 65.8 71.2 80 81.7 91.6 96
.32 .34 .39 .43 .47 .51 .59 .66 .73 .78 .82 .91 .95 1.02 1.09 1.10 1.18 1.31 1.34 1.48 1.54
16.8 18 20.3 22.6 24.7 26.9 31 34.8 38.2 41.2 43.1 47.5 50 53.3 57 57.8 62.1 69.8 70.1 77.6 80.9
3/8" FACE 900 RPM
.43 .46 .51 .57 .62 .67 .76 .85 .92 .99 1.03 1.12 1.17 1.24 1.31 1.33 1.41 1.54 1.56 1.70
15.1 16.1 17.9 20 21.7 23.4 26.7 29.7 32.3 34.6 36 39.2 40.9 43.4 46 46.5 49.4 53.8 54.6 59.5
REFERENCE PAGE 21.
1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
70 72 80 84 90 96 100 112 120 140 144 160 180 200
.05 .06 .06 .07 .07 .07 .08 .09 .09 .11 .11 .13 .14 .15
137 140 158 166 177 189 196 222 237 273 281 317 353 388
.10 .11 .12 .13 .13 .14 .15 .17 .18 .20 .21 .23 .26 .28
132 136 152 159 169 180 186 210 223 255 262 294 324 354
.20 .20 .22 .23 .25 .26 .27 .30 .32 .36 .37 .41 .44 .48
123 126 141 147 155 164 170 189 200 225 230 256 278 300
.35 .35 .39 .40 .42 .44 .46 .50 .53 .58 .59 .64 .69 .73
109 111 123 127 133 140 144 158 166 183 186 203 217 230
.46 .47 .52 .53 .56 .58 .59 .65 .67 .73 .74 .80 .85 .89
97.5 99.4 108 112 117 122 125 136 141 153 156 168 178 187
.71 .72 .77 .79 .81 .84 .85 .91 .93 .99 1.00 1.06 1.10 1.13
74.2 .86 75.3 .87 80.7 .92 82.7 .94 85.4 .96 87.9 .98 89.5 1.00 95.5 1.05 98.1 1.07 104 105 111 115 119
60 60.6 64.3 65.5 67.2 68.8 69.7 73.6 75.1
.96 .97 1.02 1.03
3600 RPM H.P. Torque
50.2 50.7 53.4 54.3
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
P-1930-BG
04/10
Boston Gear 800-825-6544
51
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 16 DIAMETRAL PITCH STEEL No. Teeth
A
11 12 13 14 15 16 18 20 22 24 26 28 30 32 36 40 48
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 21 & 22.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.02 .02 .02 .03 .03 .03 .04 .04 .05 .05 .06 .07 .07 .08 .09 .10 .12
1.24 1.29 1.42 1.55 1.66 1.77 1.96 2.13 2.27 2.38 2.51 2.62 2.69 2.81
21.7 22.6 24.9 27.1 29.0 30.9 34.3 37.2 39.7 41.7 43.9 45.8 47.1 49.3
44.9 48.9 56.1 63.8 71.1 78.7 93.8 109 124 138 154 168 182 200 228 258 314
.04 .04 .04 .05 .06 .06 .07 .09 .10 .11 .12 .13 .14 .16 .18 .20 .24
44.5 48.5 55.6 63.2 70.3 77.8 99.6 107 122 135 151 165 179 196 223 251 304
.07 .08 .09 .10 .11 .12 .14 .17 .19 .21 .23 .25 .27 .30 .34 .38 .45
43.9 47.8 54.7 62 68.9 76.2 90.5 105 118 131 146 160 172 188 213 239 286
.14 .15 .17 .19 .21 .23 .27 .32 .36 .39 .43 .47 .51 .55 .62 .69 .81
16 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
42.7 .20 46.3 .21 52.9 .24 59.8 .28 66.4 .30 73.1 .33 86.5 .39 99 .45 112 .51 124 .56 137 .61 149 .66 160 .71 174 .77 196 .86 217 .95 257 1.11
41.5 44.9 51.2 57.8 63.9 70.3 82.8 94.9 106 117 129 140 149 162 181 200 232
.36 .39 .44 .50 .55 .60 .70 .79 .88 .96 1.04 1.12 1.19 1.28 1.40 1.52 1.73
38.3 41.2 46.7 52.4 57.6 63 73.4 83.2 92.3 100 110 118 125 134 147 160 181
.51 .54 .61 .68 .75 .82 .94 1.06 1.16 1.26 1.36 1.45 1.53 1.63 1.77 1.91 2.12
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
35.6 38.1 42.9 47.9 52.5 57.1 65.9 74.1 81.5 88 95.4 102 107 114 124 134 149
.63 33.2 .67 35.4 .76 39.7 .84 44.2 .92 48.1 .99 52.2 1.14 59.8 1.27 66.7 1.39 72.9 1.49 78.3 1.61 84.4 1.71 89.6 1.79 93.8 1.90 99.7 2.05 107 2.18 115 2.40 126
1/2" FACE
600 RPM
900 RPM
.84 .89 .99 1.09 1.18 1.27 1.44 1.59 1.72 1.83 1.96 2.06 2.15 2.27 2.42 2.55 2.76
29.4 31 34.6 38.2 41.3 44.5 50.4 55.7 60.3 64.2 68.6 72.3 75.1 79.4 84.6 89.4 96.5
REFERENCE PAGE 22.
1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
54 56 60 64 72 80 84 96 112 120 128 144 160 192
.09 .09 .10 .10 .12 .13 .14 .15 .18 .19 .20 .23 .26 .307
217 224 239 260 290 327 342 388 455 486 516 574 648 762
.17 .17 .18 .20 .22 .25 .26 .29 .34 .36 .38 .42 .47 .54
209 216 231 249 277 311 325 365 425 452 477 527 590 683
.31 .32 .34 .37 .40 .45 .47 .52 .60 .63 .66 .72 .79 .90
196 202 214 231 255 283 294 327 376 396 415 453 500 566
.55 .57 .60 .64 .69 .76 .79 .86 .97 1.01 1.05 1.12 1.22 1.34
16 DIAMETRAL PITCH NON-METALLIC No. Teeth
3600 RPM
25 RPM
50 RPM
100 RPM
173 178 188 201 219 240 248 271 304 318 330 353 384 421
.74 .76 .80 .85 .91 .99 1.02 1.10 1.22 1.26 1.30 1.38 1.48 1.60
156 160 167 178 192 208 214 231 256 265 274 289 311 335
1.13 1.16 1.20 1.26 1.33 1.42 1.45 1.53 1.65 1.69 1.72 1.79 1.89
119 121 126 132 140 149 152 161 173 177 181 188 198
1.38 1.40 1.44 1.50 1.57 1.66 1.69 1.76
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
96.6 98.1 100 105 110 116 118 123
1.54 1.57 1.60 1.67
.06 .09 .11 .14 .18 .21 .26
19 28 34 44 57 63 82
.09 .12 .15 .19 .24 .28 .34
19 30 31 40 50 58 71
.15 .20 .24 .31 .38 .44 .54
16 21 25 32 40 46 57
.20 .26 .31 .40 .49 .60 .72
14 18 22 28 34 40 50
.25 .32 .38 .49 .62 .72 .88
Torque
REFERENCE PAGE 22.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16 20 24 32 40 48 64
H.P.
81.1 82.2 84.2 87.5
1/2" FACE 900 RPM
3600 RPM
13 17 20 26 32 37 46
.32 .42 .50 .65 .82 .96 1.20
11 15 17 23 29 33 42
3600 RPM H.P.
Torque
.56 .69 .82 1.12 1.41 1.65
9 12 14 20 25 29
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. 2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed 1000 FPM and are not subjected to shock loads. *Torque Ratings (Lb. Ins.).
52
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 12 DIAMETRAL PITCH STEEL No. Teeth
11 12 13 14 15 16 18 20 21 22 24 30 32 36 40 42
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
3/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 22.
1200 RPM
1800 RPM
H.P. Torque
H.P. Torque H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.05 .05 .06 .07 .07 .08 .10 .11 .12 .13 .14 .19 .21 .24 .27 .28
.09 .10 .12 .13 .15 .16 .19 .23 .24 .26 .28 .37 .41 .46 .52 .55
.35 .38 .44 .49 .55 .60 .71 .82 .87 .92 1.01 1.29 1.40 1.57 1.74 1.80
.51 .55 .63 .71 .78 .86 1.01 1.15 1.22 1.28 1.41 1.78 1.92 2.13 2.34 2.42
.93 .99 1.12 1.25 1.37 1.50 1.73 1.95 2.06 2.15 2.33 2.85 3.05 3.33 3.59 3.69
1.27 1.35 1.51 1.68 1.83 1.99 2.28 2.54 2.67 2.78 2.98 3.57 3.80 4.09 4.37 4.46
2.82 2.92 3.19 3.46 3.69 3.91 4.31 4.65 4.81 4.93 5.14
49.4 51.1 55.9 60.6 64.6 68.5 75.4 81.4 84.3 86.2 90.0
119 130 149 169 189 209 249 289 310 328 365 483 529 605 682 715
118 129 147 167 186 206 245 284 304 322 357 470 514 586 659 689
.18 .20 .23 .26 .29 .32 .38 .44 .47 .49 .54 .71 .77 .88 .98 1.02
116 126 144 163 181 200 237 274 293 310 343 447 488 552 617 644
12 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
112 120 138 156 172 190 224 257 274 288 317 407 442 495 547 568
108 116 132 149 164 180 242 215 257 270 296 373 403 448 492 509
97 104 118 131 144 157 182 205 216 226 245 299 320 349 377 387
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
88.6 94.4 106 118 128 139 159 178 187 195 209 250 266 286 306 312
1.55 1.64 1.83 2.03 2.20 2.38 2.70 2.99 3.14 3.25 3.47 4.09 4.32 4.62 4.90 4.99
81.5 86.3 96.3 107 116 125 142 157 164 171 182 215 227 243 257 262
3/4" FACE
600 RPM
900 RPM
2.00 2.10 2.33 2.56 2.76 2.96 3.32 3.64 3.80 3.92 4.14 4.78 5.02 5.31
70 73.6 81.6 89.6 96.6 103 116 127 133 137 145 167 176 186
REFERENCE PAGE 23.
1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
48 54 60 64 72 84 96 108 112 120 144 168
.20 .23 .25 .27 .30 .36 .40 .46 .47 .50 .59 .69
497 571 631 683 762 896 1014 1148 1187 1264 1487 1745
.38 .43 .48 .51 .57 .66 .74 .84 .86 .91 1.06 1.22
477 545 600 647 718 837 938 1054 1087 1150 1333 1541
.70 441 .79 500 .87 546 .93 586 1.02 644 1.17 739 1.30 817 1.44 906 1.47 929 1.55 975 1.75 1103 1.98 1248
1.22 1.36 1.47 1.56 1.69 1.90 2.06 2.24 2.29 2.37 2.61 2.87
12 DIAMETRAL PITCH NON-METALLIC No. Teeth
3600 RPM
25 RPM
50 RPM
100 RPM
384 430 463 493 533 598 649 706 720 748 821 905
1.62 1.79 1.91 2.02 2.17 2.40 2.56 2.76 2.80 2.89 3.11 3.38
340 377 402 425 455 503 538 579 588 607 654 710
2.41 2.62 2.74 2.87 3.01 3.24 3.39 3.58 3.62 3.69 3.86
253 275 288 301 316 340 356 376 379 387 406
2.88 3.09 3.21 3.33 3.46
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
201 216 224 233 242
3.19 3.40
REFERENCE PAGE 23.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15 18 21 24 30 36 48 60
.13 .19 .23 .27 .34 .40 .51 .60
41 60 72 85 107 126 161 189
.20 .26 .31 .36 .44 .52 .66 .80
42 54 65 76 92 109 138 168
.34 .43 .50 .58 .73 .82 1.05 1.29
36 45 52 60 76 86 110 135
.45 .56 .66 .76 .95 1.13 1.39 1.72
31 39 46 53 66 79 97 120
.56 .68 .81 .92 1.14 1.36 1.70 2.13
Torque
167 178
3/4" FACE 900 RPM
3600 RPM H.P.
29 36 42 48 60 71 89 112
.72 .90 1.06 1.22 1.56 1.83 2.33 2.95
25 31 37 42 54 64 81 103
3600 RPM H.P.
Torque
1.15 1.44 1.80 2.07 2.64 3.18
20 25 31 36 46 56
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. 2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed 1000 FPM and are not subjected to shock loads. *Torque Ratings (Lb. Ins.).
P-1930-BG
04/10
Boston Gear 800-825-6544
53
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 10 DIAMETRAL PITCH STEEL No. Teeth
A
11 12 14 15 16 18 20 24 25 28 30 32 35 36
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1" FACE
600 RPM
900 RPM
REFERENCE PAGE 23. 1200 RPM
1800 RPM
H.P.
Torque
.09 .10 .13 .14 .16 .19 .22 .28 .29 .34 .37 .40 .45 .46
4.85 5.00 5.89 6.25 6.62 7.25 7.79
85 88 103 109 116 127 136
229 249 325 362 400 447 553 698 742 854 922 1010 1123 1153
.18 226 .20 246 .25 320 .28 356 .31 393 .37 468 .43 542 .54 681 .57 722 .66 829 .71 893 .78 977 .86 1083 .88 1111
.35 221 .67 .38 240 .73 .49 311 .93 .55 345 1.03 .60 381 1.13 .72 451 1.33 .83 520 1.53 1.03 648 1.88 1.09 687 1.98 1.24 784 2.24 1.34 842 2.39 1.46 917 2.59 1.60 1011 2.83 1.64 1036 2.89
10 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
211 229 294 325 357 420 481 592 625 707 754 817 893 912
.96 1.04 1.33 1.46 1.60 1.87 2.13 2.59 2.73 3.06 3.25 3.51 3.80 3.88
202 218 279 307 337 394 448 545 574 644 683 737 799 815
1.71 1.83 2.30 2.51 2.73 3.15 3.53 4.19 4.38 4.83 5.07 5.41 5.79 5.87
179 192 241 264 287 330 371 440 460 507 533 569 608 617
2.31 2.45 3.04 3.30 3.57 4.07 4.52 5.26 5.49 5.98 6.24 6.61 7.01 7.09
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
162 172 213 231 250 285 317 369 384 419 437 463 491 496
2.80 2.95 3.62 3.92 4.22 4.76 5.26 6.04 6.28 6.79 7.05 7.44 7.83 7.91
147 155 190 206 221 250 276 317 330 357 370 391 411 415
1" FACE
600 RPM
900 RPM
3.55 3.71 4.49 4.82 5.15 5.75 6.28 7.09 7.34 7.85 8.10
124 130 157 169 180 201 220 248 257 275 283
REFERENCE PAGE 24.
1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
40 42 45 48 50 54 55 60 64 70 72 80 84 90 96 100 110 120 140 144 160 180
.31 .32 .35 .38 .39 .43 .44 .48 .51 .56 .57 .64 .67 .72 .76 .79 .87 .94 1.08 1.11 1.24 1.37
780 818 889 946 983 1083 1105 1199 1297 1410 1447 1623 1697 1807 1916 1988 2203 2380 2724 2791 3132 3459
.59 .62 .67 .71 .74 .82 .83 .90 .97 1.04 1.07 1.19 1.24 1.32 1.39 1.44 1.58 1.69 1.91 1.95 2.16 2.36
749 783 850 901 935 1029 1046 1130 1217 1316 1349 1502 1565 1659 1750 1810 1990 2133 2405 2457 2727 2971
1.10 1.15 1.24 1.31 1.35 1.48 1.50 1.61 1.72 1.84 1.88 2.07 2.15 2.26 2.37 2.44 2.64 2.80 3.09 3.15 3.44 3.68
693 722 780 823 851 931 945 1013 1084 1162 1187 1308 1355 1425 1492 1535 1667 1766 1949 1983 2166 2318
1.92 1.99 2.13 2.23 2.29 2.48 2.51 2.66 2.82 2.99 3.04 3.30 3.39 3.53 3.65 3.74 3.99 4.17 4.48 4.54 4.87 5.11
10 DIAMETRAL PITCH NON-METALLIC No. Teeth
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
25 RPM
50 RPM
100 RPM
603 626 670 701 722 782 791 839 890 942 958 1039 1069 1111 1152 1177 1258 1314 1413 1430 1535 1609
2.54 2.63 2.79 2.91 2.98 3.21 3.24 3.41 3.59 3.77 3.82 4.10 4.10 4.34 4.46 4.54 4.81 4.98 5.27 5.33 5.66 5.87
534 552 587 611 626 674 681 716 755 792 803 861 882 911 938 955 1011 1047 1108 1119 1188 1233
3.79 3.88 4.08 4.20 4.27 4.53 4.57 4.73 4.93 5.10 5.15 5.43 5.51 5.63 5.73 5.80 6.05 6.18
398 407 428 441 449 476 480 497 518 535 541 570 579 591 602 609 636 650
4.52 4.61 4.81 4.92 4.99 5.26 5.29 5.43
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
317 323 337 345 350 368 371 381
5.01 5.09
.27 .33 .40 .51 .62
85 104 126 161 195
.38 .47 .54 .67 .81
80 99 113 140 170
.63 .78 .88 1.09 1.29
66 82 92 114 135
.83 58 1.02 71 1.15 80 1.42 99 1.69 118
1.00 1.24 1.39 1.73 2.07
Torque
REFERENCE PAGE 23.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15 18 20 25 30
H.P.
263 267
1" FACE 900 RPM
3600 RPM
52 65 73 90 109
1.31 1.63 1.85 2.32 2.80
46 57 65 81 98
3600 RPM H.P.
Torque
2.08 2.60 3.12 4.00 4.89
36 45 55 70 86
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. 2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed 1000 FPM and are not subjected to shock loads. *Torque Ratings (Lb. Ins.).
54
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 8 DIAMETRAL PITCH STEEL No. Teeth
11 12 14 15 16 18 20 22 24 28 30 32
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE 100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 24.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.18 .19 .25 .28 .31 .37 .43 .48 .54 .66 .71 .78
446 485 632 703 778 927 1075 1219 1355 1655 1786 1957
.35 .38 .49 .55 .60 .72 .83 .94 1.04 1.27 1.36 1.49
439 478 620 690 762 905 1047 1184 1313 1596 1718 1878
.68 .73 .95 1.05 1.16 1.37 1.58 1.78 1.96 2.37 2.53 2.76
427 463 599 664 731 865 996 1121 1237 1490 1598 1738
1.28 1.38 1.77 1.96 2.15 2.52 2.88 3.21 3.52 4.18 4.44 4.80
8 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
404 436 559 617 677 794 907 1012 1109 1316 1400 1513
1.82 1.96 2.49 2.74 3.00 3.49 3.96 4.39 4.78 5.61 5.93 6.38
383 412 524 576 630 734 832 923 1004 1178 1247 1340
3.16 3.37 4.21 4.58 4.97 5.69 6.35 6.95 7.46 8.53 8.93 9.49
332 4.19 294 5.00 354 4.43 310 5.26 442 5.45 382 6.40 481 5.90 413 6.89 522 6.36 445 7.39 598 7.20 504 8.30 667 7.96 557 9.10 730 8.62 603 9.79 783 9.17 642 10.36 896 10.33 723 11.54 938 10.73 752 11.94 997 11.34 794 12.56
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
600 RPM
263 6.21 276 6.47 336 7.75 362 8.29 388 8.83 436 9.80 478 10.64 514 11.34 544 11.90 606 627 660
1-1/4" FACE 900 RPM
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.53 .60 .63 .67 .72 .83 .86 .92 .99 1.10 1.23 1.29 1.34 1.45 1.69 1.79 1.89 2.09 2.33
1279 1434 1498 1591 1719 1958 2021 2145 2307 2548 2828 2943 3056 3277 3757 3960 4155 4528 4980
1.86 2.07 2.16 2.28 2.44 2.75 2.83 2.98 3.19 3.47 3.81 3.94 4.06 4.31 4.83 5.04 5.24 5.60 6.07
1174 1305 1358 1437 1540 1735 1784 1880 2008 2188 2398 2481 2561 2713 3045 3176 3300 3532 3828
3.20 3.51 3.63 3.82 4.05 4.48 4.59 4.79 5.06 5.42 5.84 5.99 6.13 6.41 7.01 7.22 7.42 7.78 8.28
8 DIAMETRAL PITCH NON-METALLIC No. Teeth
25 RPM
50 RPM
100 RPM
884 961 989 1036 1088 1192 1215 1259 1323 1399 1492 1523 1553 1608 1731 1773 1811
6.14 6.55 6.69 6.95 7.19 7.72 7.83 8.01 8.33 8.64 9.06 9.18 9.30 9.50
645 688 703 730 756 811 822 842 875 908 952 965 976 998
7.25 7.66 7.78 8.05 8.27
300 RPM
600 RPM
25 RPM
50 RPM
176 192 233 283 334
.76 .88 .99 1.19 1.38
160 185 208 250 290
1.23 1.41 1.59 1.90 2.20
129 148 167 200 231
141⁄ 2° PRESSURE ANGLE 100 RPM
200 RPM
300 RPM
900 RPM
1200 RPM
1.61 1.84 2.08 2.50 2.91
112 129 146 175 204
1.96 2.25 2.54 3.06 3.57
103 118 133 160 187
1-1/2" FACE
600 RPM
946 1030 1340 1491 1648 1962 2273 2436 2860 3335 3761
.74 .80 1.04 1.15 1.27 1.51 1.74 1.86 2.18 2.53 2.84
928 1008 1308 1452 1603 1902 2196 2349 2745 3186 3576
1.42 1.54 1.98 2.19 2.41 2.84 3.26 3.48 4.03 4.64 5.17
893 968 1247 1381 1519 1792 2057 2194 2541 2924 3255
2.64 2.84 3.62 3.99 4.37 5.10 5.79 6.15 7.02 7.97 8.76
832 3.70 778 896 3.97 834 1142 5.01 1053 1257 5.49 1154 1376 5.98 1257 1606 6.92 1455 1825 7.81 1640 1937 8.25 1734 2212 9.32 1958 2512 10.48 2201 2761 11.41 2396
6.20 6.57 8.12 8.81 9.51 10.80 11.97 12.56 13.87 15.29 16.35
652 691 853 925 999 1135 1258 1319 1457 1606 1717
900 RPM
8.01 8.41 10.24 11.03 11.83 13.28 14.57 15.20 16.57 18.05 19.10
H.P. Torque
REFERENCE PAGE 24. 1800 RPM
2.60 3.00 3.40 4.13 4.86
91 105 119 144 170
561 589 717 773 828 930 1020 1065 1160 1264 1338
9.37 9.78 11.77 12.62 13.47 15.00 16.33 16.99 18.35
3600 RPM H.P. Torque
4.39 4.71 5.84 7.22
77 82 102 126
REFERENCE PAGE 25.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.38 .41 .53 .59 .65 .78 .90 .97 1.13 1.32 1.49
3600 RPM
507 536 545 564 579
141⁄ 2° PRESSURE ANGLE 1-1/4" FACE
200 RPM
.56 .61 .74 .90 1.06
6 DIAMETRAL PITCH STEEL
11 12 14 15 16 18 20 21 24 27 30
4.21 4.57 4.71 4.93 5.18 5.67 5.78 5.99 6.30 6.66 7.10 7.25 7.39 7.65 8.24 8.44 8.62
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16 18 20 24 28
No. Teeth
1009 1107 1145 1204 1275 1413 1446 1508 1595 1707 1839 1887 1933 2019 2207 2275 2339 2452 2610
143 147 172 182 192
REFERENCE PAGE 25.
36 40 42 44 48 54 56 60 64 72 80 84 88 96 112 120 128 144 160
1.01 1.14 1.19 1.26 1.36 1.55 1.60 1.70 1.83 2.02 2.24 2.34 2.42 2.60 2.98 3.14 3.30 3.59 3.95
H.P. Torque
217 8.17 226 8.39 271 9.81 290 10.39 309 10.96 343 372 397 417
No. Teeth
1339 1508 1579 1681 1824 2092 2164 2307 2492 2775 3107 3246 3384 3656 4256 4517 4773 5272 5868
3600 RPM
492 514 618 663 708 788 858 892 964
11.29 11.69 13.85 14.75 15.65 17.23
3600 RPM H.P. Torque
395 14.19 249 409 14.51 254 485 517 548 603
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.). P-1930-BG
04/10
Boston Gear 800-825-6544
55
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 6 DIAMETRAL PITCH CAST IRON
A
25 RPM
50 RPM
100 RPM
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
600 RPM
1-1/2" FACE 900 RPM
REFERENCE PAGE 26.
1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
32 33 36 40 42 48 54 60 64 66 72 84 96 108 120 144
.98 2470 1.01 2543 1.12 2813 1.25 3163 1.31 3310 1.51 3814 1.73 4364 1.90 4801 2.05 5177 2.11 5322 2.28 5750 2.66 6695 2.98 7510 3.35 8436 3.65 9205 4.23 10664
1.86 1.91 2.10 2.35 2.45 2.80 3.18 3.47 3.72 3.81 4.09 4.69 5.19 5.75 6.19 7.01
2341 3.36 2406 3.45 2650 3.77 2962 4.17 3090 4.33 3530 4.88 4005 5.46 4371 5.88 4688 6.26 4807 6.39 5153 6.77 5912 7.60 6538 8.24 7246 8.97 7806 9.50 8831 10.43
2120 2173 2375 2628 2728 3073 3440 3706 3944 4027 4267 4790 5193 5652 5987 6571
5 DIAMETRAL PITCH STEEL No. Teeth
11 12 14 15 16 18 20
25 RPM
50 RPM
45 50 55 60 70 80 100
1583 1723 2241 2491 2754 3275 3793
1.23 1.33 1.73 1.92 2.11 2.50 2.89
25 RPM
100 RPM
1546 1680 2176 2415 2664 3156 3640
2.35 2.54 3.26 3.61 3.97 4.67 5.35
50 RPM
1479 1600 2057 2275 2501 2942 3370
100 RPM
10.38 10.51 11.09 11.76 11.97 12.75 13.59 14.00 14.50 14.62 14.94
200 RPM
300 RPM
4.31 4.64 5.89 6.47 7.07 8.22 9.31
1360 5.99 1258 1462 6.40 1345 1855 8.04 1689 2039 8.79 1847 2227 9.56 2008 2590 11.01 2313 2934 12.36 2597
1-3/4" FACE
600 RPM
9.79 10.33 12.68 13.71 14.76 16.68 18.40
1028 1085 1332 1441 1550 1752 1933
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
900 RPM
REFERENCE PAGE 26.
1200 RPM
1800 RPM
600 RPM
12.41 12.99 15.70 16.86 18.03 20.13 21.98
869 910 1099 1181 1262 1410 1539
14.33 14.91 17.82 19.05 20.27 22.46 24.34
753 783 936 1000 1065 1179 1279
1-3/4" FACE 900 RPM
16.96 17.49 20.60 21.88
REFERENCE PAGE 26.
1200 RPM
1800 RPM
3.95 4.17 5.03 5.95 6.70
2.16 2.29 2.80 3.37 3.85
2723 2885 3534 4246 4852
2487 6.73 2626 7.07 3168 8.32 3749 9.64 4224 10.65
5459 7.44 4689 11.60 5956 8.01 5051 12.29 6612 8.79 5539 13.27 7089 9.31 5870 13.86 8135 10.46 6592 15.16 9153 11.54 7270 16.35 10745 13.08 8241 17.84
25 RPM
50 RPM
2120 8.79 1847 12.69 2227 9.20 1933 13.19 2623 10.66 2238 14.80 3038 12.15 2554 16.44 3356 13.25 2783 17.53
1333 14.88 1042 1385 15.41 1079 1554 17.00 1191 1727 1841
3657 3874 4182 4368 4779 5152 5620
1945 2005 2112 2159
14.27 14.95 15.99 16.56 17.84 18.99
2997 3142 3359 3478 3748 3989
18.52 19.08 20.11 20.55
141⁄ 2° PRESSURE ANGLE 100 RPM
200 RPM
300 RPM
600 RPM
2" FACE 900 RPM
2810 3057 3971 4414 4876 5794 6703 7579
2.17 2.35 3.04 3.37 3.71 4.39 5.06 5.69
2730 4.10 2963 4.43 3831 5.67 4247 6.26 4680 6.87 5535 8.06 6373 9.21 7173 10.28
2584 2792 3577 3948 4332 5080 5802 6478
7.41 7.94 10.02 10.98 11.97 13.85 15.61 17.22
2334 2502 3158 3461 3772 4364 4920 5427
10.13 10.79 13.46 14.67 15.90 18.20 20.33 22.23
2128 2266 2827 3081 3339 3824 4271 4670
16.01 16.83 20.48 22.06 23.66 26.56 29.13 31.33
1682 1768 2151 2318 2485 2790 3060 3291
19.86 20.69 24.79 26.52 28.26 31.35 34.04 36.29
1391 1449 1736 1857 1979 2196 2384 2541
22.57 23.37 27.70 29.50 31.30
3600 RPM H.P. Torque
REFERENCE PAGE 27.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.11 1.21 1.58 1.75 1.93 2.30 2.66 3.01
3600 RPM H.P. Torque
594 613 721 766
1.13 1.20 1.49 1.80 2.08
2859 3034 3752 4548 5242
H.P. Torque
1090 12.06 844 1104 1165 1235 1257 1339 1427 1471 1523 1536 1569
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
4 DIAMETRAL PITCH STEEL
11 12 14 15 16 18 20 22
1539 1567 1678 1811 1858 2025 2199 2305 2411 2442 2528 2724 2849 3006
H.P. Torque H.P. Torque
2.36 5947 4.33 2.60 6543 4.73 2.90 7321 5.25 3.14 7910 5.62 3.65 9213 6.45 4.17 10514 7.26 5.03 12671 8.52
No. Teeth
7.32 7.46 7.99 8.62 8.85 9.64 10.47 10.97 11.48 11.62 12.03 12.96 13.56 14.31
141⁄ 2° PRESSURE ANGLE
5 DIAMETRAL PITCH CAST IRON
24 25 30 35 40
1783 1821 1967 2144 2211 2441 2683 2842 2993 3040 3175 3473 3680 3924 4083 4347
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.63 .68 .89 .99 1.09 1.30 1.50
No. Teeth
5.66 5.78 6.24 6.80 7.02 7.75 8.52 9.02 9.50 9.65 10.08 11.02 11.68 12.45 12.96 13.79
3600 RPM
3600 RPM H.P.
Torque
1185 26.14 915 1228 26.85 940 1455 1550 1644
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
56
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 4 DIAMETRAL PITCH CAST IRON No. Teeth
24 28 30 32 36 40 42 44 48 54 56 60 64 72 80 84 88 96
25 RPM
50 RPM
100 RPM
11 12 14 15 16 18 20 21
200 RPM
5042 6129 6599 7211 8187 9177 9588 10181 10999 12530 12933 13727 14763 16305 18101 18838 19561 20970
3.77 4.54 4.87 5.30 5.96 6.63 6.90 7.29 7.82 8.81 9.06 9.55 10.20 11.11 12.18 12.60 13.00 13.78
4750 5723 6135 6675 7514 8354 8694 9195 9858 11104 11419 12034 12852 14005 15350 15877 16387 17365
6.75 8.02 8.53 9.22 10.24 11.24 11.63 12.22 12.95 14.35 14.68 15.32 16.20 17.33 18.68 19.17 19.63 20.50
4257 5053 5378 5811 6454 7085 7328 7703 8163 9045 9253 9652 10209 10923 11772 12079 12372 12922
24 30 36 42 48 54 60 72 84 96 108
600 RPM
25 RPM
50 RPM
11.19 12.99 13.69 14.65 15.98 17.24 17.69 18.46 19.28 20.94 21.29 21.94 22.95 24.07 25.48 25.93 26.35 27.13
3525 4094 4314 4616 5034 5433 5575 5816 6074 6598 6708 6915 7233 7585 8029 8170 8304 8548
14.32 16.38 17.14 18.22 19.64 20.97 21.42 22.24 23.02 24.72 25.04 25.65 26.66 27.65
3008 3441 3601 3829 4126 4406 4499 4672 4837 5193 5261 5388 5601 5810
19.88 22.16 22.92 24.11 25.49 26.77 27.12 27.97 28.58
2" FACE 900 RPM
REFERENCE PAGE 27. 1200 RPM
1800 RPM
100 RPM
200 RPM
300 RPM
3" FACE
7421 5.67 7146 10.56 8067 6.14 7743 11.37 10462 7.92 9979 14.49 11618 8.76 11046 15.96 12825 9.64 12156 17.47 15214 11.37 14333 20.38 17570 13.05 16454 23.16 18795 13.92 17549 24.59
6652 7167 9134 10056 11008 12845 14599 15495
25 RPM
50 RPM
100 RPM
18.55 19.80 24.79 27.06 29.38 33.75 37.80 39.84
5846 6239 7812 8528 9259 10637 11913 12556
24.82 26.30 32.48 35.24 38.03 43.20 47.89 50.24
5213 5524 6824 7403 7989 9076 10062 10554
600 RPM
37.47 39.14 47.09 50.49 53.89 60.00 65.33 67.96
3936 4111 4947 5304 5661 6303 6863 7139
141⁄ 2° PRESSURE ANGLE 200 RPM
300 RPM
900 RPM
1200 RPM
1800 RPM
600 RPM
45.15 46.74 55.40 59.01 62.60 68.93
13175 17164 21199 24721 28241 32043 34965 41223 47293 52300 57968
9.67 12.40 15.07 17.32 19.50 21.83 23.52 27.08 30.40 32.96 35.87
12195 15626 18998 21828 24586 27523 29651 34136 38322 41545 45212
16.84 21.03 24.96 28.06 30.99 34.06 36.08 40.30 44.08 46.71 49.81
10617 13251 15732 17687 19530 21466 22740 25402 27782 29437 31395
26.76 32.25 37.15 40.69 43.91 47.30 49.22 53.32 56.87 59.02 61.84
8433 10162 11707 12822 13838 14906 15509 16803 17923 18597 19486
33.30 39.23 44.37 47.87 51.00 54.35
3600 RPM H.P. Torque
3162 50.30 2642 3273 51.78 2719 3880 4132 4383 4827
3" FACE 900 RPM
REFERENCE PAGE 27. 1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
5.23 6.81 8.41 9.81 11.20 12.71 13.87 16.35 18.76 20.75 22.99
H.P. Torque
REFERENCE PAGE 27.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
2.94 3.20 4.15 4.61 5.09 6.03 6.97 7.46
3600 RPM
2089 22.84 1600 2328 2408 2534 2677 2812 2849 2938 3002
141⁄ 2° PRESSURE ANGLE
3 DIAMETRAL PITCH CAST IRON No. Teeth
300 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
2.00 2.43 2.62 2.86 3.25 3.64 3.80 4.04 4.36 4.97 5.13 5.44 5.86 6.47 7.18 7.47 7.76 8.32
3 DIAMETRAL PITCH STEEL No. Teeth
141⁄ 2° PRESSURE ANGLE
3600 RPM H.P. Torque
6995 44.05 4627 8241 50.07 5259 9322 55.08 5786 10056 10715 11417
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
P-1930-BG
04/10
Boston Gear 800-825-6544
57
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 20 DIAMETRAL PITCH STEEL No. Teeth
A
12 14 15 16 18 20 24 25 30 35 40 45 50 60 70
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
80 84 90 100 120 140 160 180 200
900 RPM
REFERENCE PAGE 42.
1200 RPM
1800 RPM
3600 RPM H.P. Torque
1.08 1.32 1.42 1.49 1.64 1.78 2.00 2.04 2.28 2.55 2.73
36.5 48.0 53.8 58.6 68.6 79.2 99.5 105 132 165 194 224 248 306 365
.03 .04 .04 .05 .05 .06 .08 .08 .10 .13 .15 .17 .19 .24 .28
36.3 47.7 53.3 58.1 67.9 78.4 98.3 103 130 162 190 219 242 296 352
.06 .07 .08 .09 .11 .12 .15 .16 .20 .25 .29 .33 .37 .44 .52
35.8 46.9 52.5 57.1 66.7 76.8 95.8 101 126 156 182 209 230 279 329
25 RPM
50 RPM
100 RPM
.11 .14 .16 .18 .20 .23 .29 .30 .38 .46 .53 .61 .66 .79 .92
34.9 .16 45.6 .21 50.9 .23 55.2 .25 64.2 .29 73.7 .34 91.3 .41 95.6 .43 119 .53 145 .65 168 .75 192 .84 210 .92 250 1.08 291 1.24
34.1 44.3 49.3 53.5 62.0 70.8 87.1 91.1 112 136 157 177 192 227 260
.30 .39 .43 .46 .53 .60 .73 .76 .92 1.09 1.24 1.38 1.47 1.68 1.88
31.8 40.9 45.3 48.8 56.1 63.5 76.7 79.9 96.4 115 130 145 154 177 198
20° PRESSURE ANGLE 200 RPM
300 RPM
.42 .54 .60 .64 .73 .82 .98 1.02 1.21 1.42 1.58 1.74 1.84 2.07 2.28
29.7 37.9 41.9 44.9 51.2 57.5 68.5 71.1 84.5 99.4 111 122 129 145 160
.53 .67 .74 .79 .90 1.00 1.18 1.22 1.43 1.67 1.84 2.01 2.10 2.34 2.55
28.0 35.4 38.9 41.6 47.1 52.6 61.9 64.1 75.2 87.5 96.6 105 111 123 134
1/2" FACE
600 RPM
900 RPM
.71 .89 .97 1.04 1.16 1.28 1.48 1.53 1.76 2.02 2.20 2.37 2.46 2.69
25.0 31.2 34.1 36.3 40.6 44.9 51.9 53.5 61.6 70.6 77.0 83.0 86.1 94.0
256 269 287 317 387 447 520 579 637
.20 .20 .22 .24 .29 .33 .38 .42 .46
246 257 274 302 365 418 481 532 580
.36 .38 .40 .44 .52 .59 .66 .72 .78
228 237 252 275 327 369 419 457 492
25 RPM
50 RPM
.63 .65 .69 .74 .86 .95 1.06 1.13 1.20
198 206 216 233 271 299 333 356 377
.84 .86 .90 .96 1.10 1.20 1.31 1.39 1.46
176 181 189 202 231 251 276 292 306
1.24 1.27 1.32 1.38 1.53 1.62 1.74 1.80 1.86
131 134 138 145 161 170 183 189 195
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1.49 1.51 1.55 1.61 1.76 1.83
104 106 109 113 123 128
1.65 1.67 1.71 1.76
1800 RPM
900 RPM
3600 RPM H.P.
Torque
86.5 87.8 89.7 92.4
3/4" FACE
600 RPM
18.9 23.0 24.9 26.2 28.7 31.2 34.9 35.8 40.0 44.7 47.8
REFERENCE PAGE 42. 1200 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16 DIAMETRAL PITCH STEEL
12 14 15 16 18 20 24 28 30 32 36 40 48 56 60 64 72 80
1/2" FACE
600 RPM
.01 .02 .02 .02 .03 .03 .04 .04 .05 .07 .08 .09 .10 .12 .14
.10 .11 .11 .13 .15 .18 .21 .23 .25
No. Teeth
300 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
20 DIAMETRAL PITCH CAST IRON No. Teeth
200 RPM
REFERENCE PAGE 43.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.03 .04 .05 .05 .06 .07 .09 .11 .12 .13 .16 .18 .22 .26 .28 .31 .35 .39
2.26 2.73 2.93 3.07 3.35 3.62 4.02 4.40 4.55 4.79 5.09 5.37
39.5 47.7 51.3 53.8 58.6 63.3 70.4 77.0 79.7 83.9 89.1 94.1
85.5 112 126 136 160 185 233 283 308 340 395 452 556 665 711 779 872 991
.07 .09 .10 .11 .13 .14 .18 .22 .24 .26 .31 .35 .43 .51 .54 .59 .66 .75
84.7 111 124 135 158 183 229 278 302 333 385 440 539 642 684 748 833 943
.13 .17 .19 .21 .25 .28 .35 .43 .46 .51 .58 .66 .81 .95 1.01 1.10 1.21 1.36
83.4 109 122 133 155 178 222 268 291 320 368 418 508 599 636 692 764 858
.26 .33 .37 .40 .47 .54 .66 .79 .86 .94 1.07 1.21 1.44 1.68 1.77 1.91 2.08 2.31
80.9 105 117 127 148 169 209 250 270 296 338 381 455 529 557 602 656 728
.37 .48 .54 .58 .67 .77 .94 1.12 1.20 1.31 1.49 1.66 1.96 2.25 2.36 2.54 2.74 3.01
78.4 102 113 122 142 161 198 235 253 275 312 349 412 474 496 533 575 632
.69 .88 .97 1.04 1.19 1.35 1.62 1.88 2.01 2.17 2.42 2.67 3.06 3.43 3.55 3.78 4.00 4.31
72.0 92.2 102 110 125 141 170 198 211 228 254 280 322 360 373 397 420 653
.95 1.20 1.33 1.42 1.61 1.80 2.12 2.44 2.59 2.78 3.06 3.34 3.76 4.15 4.27 4.51 4.72 5.04
66.5 84.4 92.8 99.4 113 126 149 171 181 195 215 234 264 291 299 316 330 353
1.18 1.48 1.62 1.73 1.94 2.16 2.52 2.87 3.02 3.23 3.53 3.82 4.25 4.64 4.75 5.00
61.8 77.7 85.2 90.8 102 113 132 151 159 170 186 201 223 244 250 263
1.55 1.92 2.09 2.21 2.46 2.70 3.10 3.47 3.63 3.86 4.17 4.47 4.88
54.2 67.2 73.1 77.5 86.2 94.7 108 122 127 135 146 156 171
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
58
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 16 DIAMETRAL PITCH CAST IRON No. Teeth
96 128 144 160 192
25 RPM
50 RPM
100 RPM
12 13 14 15 16 18 20 21 24 28 30 36 42 48 54
200 RPM
300 RPM
3/4" FACE
600 RPM
REFERENCE PAGE 43.
900 RPM
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.28 .38 .42 .47 .56
707 .53 666 949 .70 879 1057 .77 970 1195 .86 1088 1406 1.00 1260
.95 597 1.21 765 1.32 833 1.46 923 1.66 1044
12 DIAMETRAL PITCH STEEL No. Teeth
20° PRESSURE ANGLE
25 RPM
50 RPM
1.57 1.93 2.06 2.25 2.46
494 608 650 707 777
2.01 2.40 2.54 2.73 2.94
421 504 533 574 618
2.79 3.17 3.29 3.49 3.65
293 333 346 366 384
3.20 3.56
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
224 249
1" FACE
600 RPM
900 RPM
REFERENCE PAGE 43. 1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.08 .09 .11 .12 .13 .15 .17 .19 .22 .26 .29 .37 .44 .52 .60
202 .16 200 233 .18 230 265 .21 262 297 .23 293 323 .25 319 379 .30 373 437 .34 429 468 .36 459 548 .43 537 667 .52 651 720 .56 707 928 .71 899 1112 .85 1073 1304 .99 1252 1505 1.14 1437
.31 196 .36 225 .41 256 .45 285 .49 310 .57 361 .66 415 .70 443 .82 515 .99 621 1.07 673 1.34 847 1.59 1001 1.84 1159 2.09 1319
12 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
.60 188 .86 .68 215 .98 .77 244 1.11 .86 271 1.23 .93 294 1.33 1.08 340 1.53 1.23 389 1.74 1.31 413 1.84 1.51 477 2.11 1.80 568 2.49 1.94 612 2.68 2.41 759 3.27 2.81 884 3.77 3.20 1009 4.25 3.60 1133 4.73
181 206 233 259 279 322 365 388 444 524 562 688 792 893 993
1.54 1.75 1.96 2.16 2.31 2.63 2.95 3.11 3.50 4.04 4.29 5.11 5.73 6.33 6.90
162 183 206 227 243 276 310 327 368 425 451 537 602 665 724
20° PRESSURE ANGLE 200 RPM
300 RPM
2.09 2.36 2.63 2.88 3.07 3.46 3.84 4.03 4.48 5.10 5.37 6.28 6.94 7.56 8.14
147 165 184 202 215 242 269 282 314 357 376 440 486 529 570
2.55 2.86 3.18 3.46 3.68 4.10 4.52 4.73 5.21 5.86 6.15 7.09 7.76 8.37
134 150 167 182 193 215 238 249 274 308 323 373 407 440
1" FACE
600 RPM
900 RPM
3.27 3.63 4.00 4.34 4.58 5.04 5.50 5.73 6.22 6.89 7.19 8.15
114 127 140 152 160 177 193 201 218 241 252 285
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
60 66 72 84 96 108 120 132 144 168 192 216
.40 .45 .48 .58 .65 .75 .82 .89 .97 1.13 1.27 1.41
.75 .84 .91 1.07 1.21 1.37 1.49 1.61 1.73 2.00 2.22 2.42
949 1064 1150 1354 1519 1725 1882 2034 2181 2526 2794 3045
1.37 1.53 1.64 1.90 2.10 2.35 2.53 2.70 2.87 3.25 3.52 3.77
864 961 1031 1196 1322 1482 1596 1704 1806 2047 2219 2375
2.32 2.56 2.71 3.07 3.33 3.67 3.88 4.08 4.26 4.71 4.99 5.23
733 805 853 969 1050 1156 1224 1287 1344 1484 1573 1649
3.03 3.30 3.47 3.88 4.15 4.51 4.73 4.92 5.09 5.54 5.80 6.01
636 693 728 814 871 947 993 1033 1070 1164 1218 1263
4.34 4.65 4.81 5.24 5.49 5.85 6.03 6.19 6.32
456 488 506 551 576 615 634 650 664
5.07 5.38 5.53
3600 RPM H.P. Torque
4.53 4.97 5.42 5.80 6.05 6.55 7.02 7.26 7.72
79.4 87.1 94.8 102.0 106.0 115.0 123.0 127.0 135.0
REFERENCE PAGE 44. 1200 RPM
No. Teeth
998 1125 1221 1450 1641 1879 2068 2252 2433 2861 3209 3545
3600 RPM H.P. Torque
3600 RPM H.P.
Torque
355 377 387
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
P-1930-BG
04/10
Boston Gear 800-825-6544
59
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 10 DIAMETRAL PITCH STEEL No. Teeth
A
12 14 15 16 18 20 24 25 28 30 35 40 45 48 50
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 44.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.14 .19 .21 .23 .27 .31 .39 .41 .47 .52 .64 .75 .87 .92 .96
363 477 533 580 679 784 983 1032 1195 1300 1615 1896 2190 2328 2420
.28 .37 .42 .45 .53 .61 .76 .80 .92 1.00 1.24 1.44 1.66 1.76 1.83
358 469 525 571 667 768 958 1005 1161 1260 1558 1820 2092 2218 2301
.55 .72 .81 .88 1.02 1.17 1.45 1.52 1.74 1.88 2.31 2.67 3.05 3.21 3.32
349 456 509 552 642 737 913 956 1097 1187 1454 1685 1920 2026 2095
10 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
1.06 1.37 1.52 1.64 1.90 2.16 2.65 2.76 3.14 3.38 4.08 4.65 5.23 5.48 5.64
333 431 479 518 599 682 834 870 990 1064 1284 1467 1649 1727 1777
1.51 1.95 2.16 2.32 2.67 3.02 3.65 3.80 4.29 4.59 5.47 6.18 6.88 7.16 7.34
318 2.66 280 3.57 409 3.37 354 4.46 453 3.70 389 4.87 488 3.96 416 5.18 561 4.48 471 5.79 635 5.00 526 6.41 767 5.89 619 7.41 799 6.10 641 7.64 901 6.76 710 8.37 964 7.16 752 8.80 1150 8.33 875 10.08 1299 9.20 966 10.99 1445 10.04 1054 11.85 1504 10.33 1085 12.12 1542 10.52 1105 12.29
20° PRESSURE ANGLE 200 RPM
300 RPM
250 4.30 226 5.40 189 7.27 312 5.31 279 6.58 230 8.63 341 5.78 303 7.10 249 9.22 363 6.12 321 7.47 262 9.60 406 6.79 356 8.19 287 10.33 449 7.45 391 8.90 311 11.04 519 8.50 447 9.98 349 535 8.74 459 10.21 358 586 9.50 499 10.99 385 616 9.94 522 11.42 400 706 11.27 592 770 12.17 639 830 849 861
1-1/4" FACE
600 RPM
900 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
55 60 70 80 90 100 120 140 160 200
.65 .71 .84 .98 1.09 1.20 1.45 1.66 1.91 2.30
1.23 1.33 1.57 1.81 2.00 2.18 2.59 2.93 3.32 3.90
1550 1675 1974 2279 2517 2746 3271 3688 4191 4920
2.22 2.38 2.77 3.15 3.43 3.70 4.30 4.74 5.28 5.99
1400 1501 1743 1984 2162 2329 2709 2989 3329 3773
8 DIAMETRAL PITCH STEEL No. Teeth
12 14 15 16 18 20 22 24 28 32 36
25 RPM
50 RPM
3.72 3.94 4.48 5.00 5.35 5.67 6.40 6.88 7.49 8.17
1173 1243 1413 1576 1686 1786 2016 2167 2359 2573
4.80 5.05 5.65 6.22 6.58 6.89 7.64 8.09 8.69
1009 1061 1187 1307 1382 1448 1605 1699 1826
6.77 7.01 7.65 8.23 8.54 8.80 9.48
711 737 803 865 897 924 996
20° PRESSURE ANGLE 100 RPM
200 RPM
300 RPM
7.84 8.06
678 890 996 1084 1268 1462 1651 1831 2224 2664 3082
.53 .69 .77 .84 .98 1.13 1.27 1.41 1.70 2.03 2.34
667 874 976 1061 1238 1424 1604 1775 2145 2557 2944
1.03 1.34 1.49 1.62 1.88 2.15 2.41 2.65 3.18 3.76 4.29
647 843 939 1018 1183 1354 1518 1672 2003 2367 2703
1.93 2.50 2.77 2.99 3.44 3.91 4.35 4.75 5.61 6.54 7.37
609 787 873 943 1086 1233 1371 1498 1768 2060 2321
2.74 3.51 3.88 4.18 4.77 5.39 5.95 6.46 7.54 8.68 9.68
576 738 816 877 1003 1131 1250 1357 1583 1824 2034
4.71 5.92 6.49 6.92 7.78 8.64 9.41 10.08 11.47 12.92 14.13
495 622 681 727 817 908 989 1059 1204 1358 1484
3600 RPM H.P. Torque
900 RPM
REFERENCE PAGE 45.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.27 .35 .39 .43 .50 .58 .66 .73 .88 1.06 1.22
127 151 161 168 181 193
549 564
1-1/2" FACE
600 RPM
Torque
REFERENCE PAGE 44. 1200 RPM
No. Teeth
1638 1778 2114 2462 2742 3016 3650 4177 4814 5802
3600 RPM H.P.
6.19 434 7.68 537 8.35 585 8.85 620 9.84 689 10.82 758 11.67 817 12.39 868 13.88 972 15.44 1081 16.68 1168
7.35 9.01 9.76 10.30 11.35 12.38 13.27 14.00 15.51 17.10
386 473 513 541 596 650 698 735 815 898
9.03 10.91 11.73 12.30 13.40 14.47 15.36 16.08
316 382 411 431 469 507 538 563
3600 RPM H.P.
Torque
11.72 13.81 14.70
205 242 257
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
60
Boston Gear 800-825-6544
P-1930-BG
04/10
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 8 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
20° PRESSURE ANGLE 200 RPM
300 RPM
1-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 45. 1200 RPM
1800 RPM
No. Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
40 44 48 56 60 64 72 80 88 96 112 120 128
.84 .95 1.03 1.22 1.30 1.42 1.59 1.79 1.96 2.11 2.49 2.64 2.79
2111 2384 2587 3080 3283 3588 3997 4525 4929 5325 6266 6651 7028
1.59 1.79 1.93 2.28 2.42 2.64 2.91 3.27 3.53 3.79 4.39 4.63 4.85
2007 2256 2437 2876 3052 3322 3669 4119 4451 4772 5533 5830 6118
2.90 3.23 3.47 4.03 4.25 4.59 5.00 5.54 5.92 6.27 7.11 7.42 7.71
1928 4.92 1550 6.40 2038 5.42 1707 6.99 2184 5.74 1809 7.35 2539 6.53 2057 8.23 2676 6.81 2146 8.53 2892 7.29 2297 9.07 3151 7.80 2458 9.59 3493 8.50 2679 10.34 3729 8.93 2816 10.76 3952 9.33 2941 11.15 4483 10.31 3250 12.13 4677 10.63 3351 12.43 4860 10.93 3444 12.69
6 DIAMETRAL PITCH STEEL No. Teeth
12 14 15 16 18 21 24 27 30
25 RPM
50 RPM
1345 1469 1543 1729 1792 1905 2014 2173 2262 2341 2549 2610 2667
9.18 9.86 10.20 11.14 11.40 12.00 12.44 13.20 13.54 13.83
964 10.72 751 1035 11.41 799 1072 11.72 821 1170 1198 1260 1307 1386 1422 1453
20° PRESSURE ANGLE 100 RPM
200 RPM
300 RPM
2" FACE
600 RPM
900 RPM
REFERENCE PAGE 45 & 46. 1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.63 .83 .93 1.01 1.18 1.46 1.70 1.98 2.25
1559 2097 2345 2551 2981 3671 4294 4986 5660
1.24 1.62 1.81 1.97 2.29 2.81 3.27 3.78 4.27
1565 2046 2284 2480 2889 3541 4122 4763 5381
2.38 3.10 3.45 3.73 4.32 5.25 6.05 6.94 7.77
1502 4.41 1391 6.16 1951 5.67 1786 7.84 2171 6.27 1977 8.64 2351 6.76 2129 9.26 2722 7.74 2440 10.52 3306 9.26 2919 12.44 3815 10.54 3322 14.00 4372 11.92 3755 15.66 4899 13.18 4155 17.17
6 DIAMETRAL PITCH CAST IRON 25 RPM
50 RPM
100 RPM
1294 1647 1814 1945 2210 2613 2941 3241 3607
10.20 12.70 13.85 14.71 16.41 18.93 20.83 22.85 24.60
1072 1334 1455 1545 1724 1988 2188 2400 2584
20° PRESSURE ANGLE 200 RPM
300 RPM
13.06 16.02 17.35 18.30 20.18 22.91 24.88 26.98 28.75
915 1122 1215 1282 1413 1605 1743 1889 2013
15.19 18.42 19.85 20.85 22.79 25.61 27.56
798 967 1043 1095 1197 1345 1448
2" FACE
600 RPM
900 RPM
18.14 21.67 23.20 24.21 26.18
REFERENCE PAGE 46. 1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
33 36 42 48 54 60 66 72 84 96 108 120
1.53 1.71 2.04 2.38 2.74 3.01 3.38 3.65 4.30 4.82 5.47 5.97
2.89 3.23 3.81 4.41 5.02 5.48 6.10 6.54 7.59 8.39 9.40 10.13
3641 4066 4807 5563 6333 6910 7691 8245 9566 10579 11583 12770
5.22 5.78 6.73 7.68 8.63 9.30 10.22 10.83 12.30 13.33 14.67 15.54
3288 3644 4244 4843 5440 5860 6443 6827 7752 8404 9245 9793
8.74 9.58 10.91 12.21 13.46 14.26 15.44 16.12 17.83 18.90 20.37 21.20
2755 3018 3439 3847 4243 4494 4864 5080 5620 5955 6420 6680
11.28 12.26 13.76 15.19 16.55 17.35 18.60 19.26 20.98 21.95 23.41
2370 2575 2891 3191 3477 3645 3907 4045 4407 4611 4917
15.90 17.02 18.62 20.09 21.48 22.14 23.39 23.90
3600 RPM H.P. Torque
635 759 812 848 917
No. Teeth
3847 4316 5148 6009 6899 7591 8515 9200 10835 12152 13800 15059
3600 RPM H.P. Torque
3600 RPM H.P. Torque
1670 18.42 1290 1788 19.56 1370 1955 2111 2256 2326 2457 2511
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
P-1930-BG
04/10
Boston Gear 800-825-6544
61
A
Spur Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) 5 DIAMETRAL PITCH STEEL No. Teeth
A
12 14 15 16 18 20
25 RPM
50 RPM
20° PRESSURE ANGLE 100 RPM
2865 3756 4198 4565 5332 6141
2.22 2.89 3.23 3.50 4.08 4.68
2794 3647 4069 4416 5138 5894
4.22 5.47 6.08 6.58 7.60 8.66
2662 3449 3833 4146 4789 5456
5 DIAMETRAL PITCH CAST IRON
24 25 28 30 35 40 45 50 60 70 80 100 110 120 140 160 180
300 RPM
600 RPM
900 RPM
REFERENCE PAGE 46.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.14 1.49 1.67 1.81 2.12 2.44
No. Teeth
200 RPM
2-1/2" FACE
25 RPM
50 RPM
100 RPM
7.71 9.87 10.90 11.72 13.38 15.07
2431 3110 3435 3693 4216 4750
10.65 13.48 14.81 15.85 17.92 20.02
2237 2832 3112 3329 3766 4205
17.19 21.25 23.11 24.47 27.15 29.79
1805 2233 2427 2570 2852 3129
20° PRESSURE ANGLE 200 RPM
300 RPM
21.61 26.31 28.41 29.89 32.77 35.58
1513 1843 1990 2093 2295 2492
24.80 29.87 32.09 33.61 36.56 39.41
1302 29.09 1019 1569 34.53 1209 1686 36.87 1291 1765 1920 2070
2-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 46. 1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.82 1.91 2.21 2.40 2.97 3.47 3.98 4.38 5.32 6.27 7.23 8.71 9.68 10.38 11.70 13.30 14.49
4599 4826 5571 6050 7477 8737 10040 11046 13399 15794 18229 21969 24409 26168 29508 33526 36534
3.48 3.64 4.18 4.52 5.54 6.42 7.31 7.98 9.53 11.06 12.59 14.78 16.22 17.19 18.97 21.13 22.61
4381 4588 5267 5700 6982 8087 9216 10056 12008 13945 15869 18630 20449 21669 23910 26631 28495
6.35 6.63 7.54 8.10 9.78 11.17 12.56 13.53 15.78 17.93 20.00 22.67 24.50 25.58 27.50 29.94 31.40
4002 4177 4750 5108 6164 7040 7916 8528 9944 11300 12605 14288 15439 16125 17334 18870 19787
10.82 11.24 12.60 13.42 15.85 17.75 19.59 20.75 23.48 26.00 28.34 30.92 32.88 33.85 35.49 37.83 38.97
3411 3542 3970 4230 4995 5593 6174 6540 7400 8192 8932 9745 10362 10666 11182 11921 12281
14.15 14.64 16.23 17.18 19.98 22.08 24.09 25.25 28.05 30.58 32.92
2972 3075 3410 3609 4199 4639 5060 5304 5892 6425 6916
20.41 20.97 22.81 23.86 27.04 29.21 31.26 32.22 34.81
2144 2203 2396 2506 2840 3068 3284 3384 3657
23.95 24.51 26.37 27.41
3600 RPM H.P. Torque
3600 RPM H.P. Torque
1677 1716 1847 1920
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. They should be used for interpolation purposes only. *Torque Ratings (Lb. Ins.).
Gear Gauge Set 14-1/2° and 20° Pressure Angles This handy, steel gear gauge set consists of 16 leaves — 24 gauges — to measure both 14-1/2° and 20° Pressure Angle tooth form, in diametral pitch sizes 64, 48, 32, 24, 20, 16, 12, 10, 8, 6, 5 and 4. Pitch sizes 8, 6, 5 and 4 both 14-1/2° and 20° are cut on individual leaves. Pitch sizes 64 through 10 inclusive, have both 14-1/2° and 20° Pressure Angles on a single leaf.
SOLD ONLY AS A COMPLETE SET ORDER BY CATALOG NUMBER OR ITEM CODE
62
Boston Gear 800-825-6544
Catalog Number
Item Code
Gear Gauge
06000
P-1930-BG
04/10
Helical Gears Section Contents
B
CATALOG NUMBER / DIMENSIONS................................................................................................. 64-65 SELECTION PROCEDURE ....................................................................................................................... 66 HORSEPOWER & TORQUE RATINGS............................................................................................... 67-68 STOCK ALTERED / CUSTOM HELICAL GEARS .................................................................................. 3-5 HELICAL GEAR ENGINEERING INFORMATION .......................................................................... 304-306
P-1930-BG
04/10
Boston Gear 800-825-6544
63
Helical Gears 24 through 10 Transverse Diametral Pitch (Steel – Hardened) 14-1/2° Normal Pressure Angle – 45° Helix Angle These gears are hardened all over, except as noted. Teeth on all steel gears are polished. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.
Bore
Keyway
Style See Page 315
24
B FACE
KEYWAY
TRANSVERSE DIAMETRAL PITCH 8 .333 .1875 * 10 .417 .250 12 .500 ** 15 .625 .375 18 .750 20 .833 .500 24 1.000 30 1.250 1/8 x 1/16 36 1.500 48 2.000 .625 60 2.500 72 3.000
A
20 PITCH DIA.
BORE
TRANSVERSE DIAMETRAL PITCH 8 .400 .250 10 .500 .3125 ** 12 .600 .375 15 .750 .4375 20 1.000 .500 1/8 x 1/16 25 1.250 .625 30 1.500 40 2.000 .750 3/16 x 3/32 50 2.500 60 3.000
A
16 STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
Alterations — 314 Horsepower Ratings — 67 Lubrication — 314 Materials — 315 Selection Procedure — 66 NOTE: Normal Diametral Pitch is equal to the Transverse Diametral Pitch divided by the cosine of the Helix Angle.
Face: 8-15 Teeth = .375" 18-72 Teeth = .250" H2408R 18268 H2408L H2410R 18272 H2410L H2412R 18276 H2412L H2415R 18280 H2415L H2418R 18284 H2418L H2420R 18288 H2420L H2424R 18292 H2424L H2430R 18296 H2430L H2436R† 18300 H2436L† H2448R† 18304 H2448L† H2460R† 18308 H2460L† H2472R† 18312 H2472L†
18270 18274 18278 18282 18286 18290 18294 18298 18302 18306 18310 18314
Face: 8-15 Teeth = .563" 18-72 Teeth = .375" H2008R 18228 H2008L H2010R 18232 H2010L H2012R 18236 H2012L H2015R 18240 H2015L H2020R 18244 H2020L H2025R 18248 H2025L H2030R† 18252 H2030L† H2040R† 18256 H2040L† H2050R† 18260 H2050L† H2060R† 18264 H2060L†
18230 18234 18238 18242 18246 18250 18254 18258 18262 18266
A
H1612R H1616R H1620R H1624R† H1632R† H1640R† H1648R†
18200 18204 18208 18212 18216 18220 18224
H1612L H1616L H1620L H1624L† H1632L† H1640L† H1648L†
18202 18206 18210 18214 18218 18222 18226
H1212L H1215L H1218L† H1224L† H1230L† H1236L†
18168 18172 18176 18180 18184 18188
H1008L H1010L H1012L H1015L† H1020L† H1025L† H1030L† H1040L†
18128 18132 18136 18140 18144 18150 18152 18156
Face = .750"
TRANSVERSE DIAMETRAL PITCH 12 1.000 15 1.250 18 1.500 .625 1/8 x 1/16 24 2.000 30 36
LEFT HAND Catalog Item Number Code
Face = .500"
TRANSVERSE DIAMETRAL PITCH 12 .750 .375 1/16 x 1/32 16 1.000 20 1.250 24 1.500 .500 1/8 x 1/16 32 2.000 40 2.500 48 3.000
12 REFERENCE PAGES
RIGHT HAND Catalog Item Number Code
A
2.500 3.000
10
TRANSVERSE DIAMETRAL PITCH 8 .800 .375 1/16 x 1/32 10 1.000 .500 1/8 x 1/16 12 1.200 .625 15 1.500 20 2.000 25 2.500 .750 3/16 x 3/32 30 3.000 40 4.000
H1212R H1215R H1218R† H1224R† H1230R† H1236R†
18170 18174 18178 18182 18186 18190
Face = .875"
A
H1008R H1010R H1012R H1015R† H1020R† H1025R† H1030R† H1040R†
18130 18134 18138 18142 18146 18148 18154 18158
*1/16" wide x .04" deep slot cut on end of gear for drive pin, not key. **3/32" wide x .06" deep slot cut on end of gear for drive pin, not key. †Teeth only hardened.
64
Boston Gear 800-825-6544
P-1930-BG
04/10
Helical Gears 8 and 6 Transverse Diametral Pitch (Bronze & Steel – Hardened) 14-1/2° Normal Pressure Angle – 45° Helix Angle All gears with hubs have setscrew at 90° to keyway. Steel gears have teeth only hardened, except as noted. Teeth on all steel gears are polished. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Hub No. of Pitch Teeth Dia. Bore Dia. Proj.
Keyway
Style RIGHT HAND See Page Catalog Item 315 Number Code
LEFT HAND Catalog Item Number Code
Face without Hubs = 1.000" –with Hubs = .750" TRANSVERSE DIAMETRAL PITCH Overall Length = Face + Hub Proj. STEEL–HARDENED 8 1.000 .500 – – H808R* 18066 H808L* 18064 1/8 x 1/16 10 1.250 .625 – – H810R* 18070 H810L* 18068 12 1.500 .750 – – H812R 18074 H812L 18072 16 2.000 A H816R 18078 H816L 18076 H820R 18082 H820L 18080 20 2.500 .875 – 3/16 x 3/32 – 24 3.000 H824R 18086 H824L 18084 32 4.000 H832R 18090 H832L 18088 8 1.000 .500 .75 .50 1/8 x 1/16 HS808R* 18092 HS808L* 18094 10 1.250 .625 1.00 .50 HS810R* 18096 HS810L* 18098 12 1.500 .750 1.25 .50 3/16 x 3/32 HS812R* 18100 HS812L* 18102 16 2.000 1.62 HS816R 18104 HS816L 18106 20 2.500 A HS820R 18108 HS820L 18110 24 3.000 1.000 2.00 .50 1/4 x 1/8 HS824R 18112 HS824L 18114 32 4.000 HS832R 18116 HS832L 18118 40 5.000 HS840R 18120 HS840L 18122 48 6.000 2.25 HS848R 18124 HS848L 18126 BRONZE 8 1.000 .500 .75 .50 1/8 x 1/16 HB808R 18356 HB808L 18358 10 1.250 .625 1.00 .50 HB810R 18360 HB810L 18362 12 1.500 .750 1.24 .50 3/16 x 3/32 A HB812R 18364 HB812L 18366 16 2.000 1.62 HB816R 18368 HB816L 18370 20 2.500 HB820R 18372 HB820L 18374 24 3.000 1.000 2.00 .50 1/4 x 1/8 HB824R 18376 HB824L 18378 32 4.000 HB832R 18380 HB832L 18382 40 5.000 B HB840R 18384 HB840L 18386 48 6.000 2.25 HB848R 18388 HB848L 18390 Face without Hubs = 1.250" 6 –with Hubs = 1.000" TRANSVERSE DIAMETRAL PITCH Overall Length = Face + Hub Proj. STEEL–HARDENED 8 1.333 .625 – – 1/8 x 1/16 H608R 18000 H608L 18002 10 1.667 .750 – – 3/16 x 3/32 H610R 18004 H610L 18006 12 2.000 A H612R 18010 H612L 18008 15 2.500 1.000 – H615R 18014 H615L 18012 – 1/4 x 1/8 18 3.000 H618R 18018 H618L 18016 24 4.000 H624R 18022 H624L 18020 8 1.333 .625 1.00 .75 1/8 x 1/16 HS608R 18024 HS608L 18026 9 1.500 1.18 HS609R 18028 HS609L 18030 10 1.667 .750 1.34 .75 3/16 x 3/32 HS610R 18032 HS610L 18034 12 2.000 1.000 1.62 .75 1/4 x 1/8 HS612R 18036 HS612L 18038 15 2.500 2.00 HS615R 18040 HS615L 18042 18 3.000 2.25 A HS618R 18044 HS618L 18046 20 3.333 1.250 HS620R 18048 HS620L 18050 .75 5/16 x 5/32 24 4.000 HS624R 18052 HS624L 18054 2.50 30 5.000 HS630R 18056 HS630L 18058 36 6.000 HS636R 18060 HS636L 18062 BRONZE 12 2.000 1.000 1.62 .75 1/4 x 1/8 HB612R 18328 HB612L 18330 15 2.500 2.00 HB615R 18332 HB615L 18334 A 18 3.000 2.25 HB618R 18336 HB618L 18338 20 3.333 1.250 HB620R 18340 HB620L 18342 .75 5/16 x 5/32 24 4.000 HB624R 18344 HB624L 18346 2.50 30 5.000 B HB630R 18348 HB630L 18350 36 6.000 HB636R 18352 HB636L 18354
8
FACE
B
HUB PROJ. KEYWAY
PITCH DIA.
BORE
HUB DIA.
SETSCREW OVERALL LENGTH
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 67, 68 Lubrication — 314 Materials — 315 Selection Procedure — 66 NOTE: Normal Diametral Pitch is equal to the Transverse Diametral Pitch divided by the cosine of the Helix Angle.
*Hardened all over.
P-1930-BG
04/10
Boston Gear 800-825-6544
65
Helical Gears Boston standard stock helical gears are made with a 45° helix angle to transmit motion and/or power between non-intersecting shafts that are parallel or at 90° to each other. They are stocked both right and left-handed. For parallel shaft operation, helical gears having opposite hand helix angles are required, while for shafts at 90° the same hand helix must be used. For parallel shaft applications, helical gears provide overlapping tooth contact. This results in a smoother, quieter operation and higher horsepower capacity than afforded by spur gears of comparable size. For 90° shaft applications, the tooth contact area is very small which considerably limits the load capacity. Horsepower ratings are not tabulated in this catalog, for 90° applications. Boston helical gears are top hobbed, resulting in extremely close concentricity between the pitch diameter and the outside diameter.
B Selection Procedure Approximate horsepower and torque ratings for selected sizes (numbers of teeth) at various operating speeds (RPM) are given for hardened steel helical gears. The ratings are based on the beam strength of the gear tooth. These ratings are for parallel shaft applications under normal operating conditions, that is: properly mounted and lubricated, carrying a smooth load for not more than 10 hours per day or a moderate shock load not more than 15 minutes in two hours (Service Factor 1.0). Refer to Table 1, below, for other types of service. Ratings for gear sizes or speeds not listed may be interpolated from the values indicated. Pitchline velocities are limited as reflected by the lack of ratings for larger numbers of teeth at higher RPM’s in the selection chart. Application in this area is not recommended.
Horsepower ratings for bronze gears are approximately 33% of these ratings. 1. Determine service factor. a. Using Application Classification Chart I, pages 323-324 determine service factor or b. With knowledge of operating conditions and load classification, select service factor from Table 1. 2. Determine Design Horsepower. Design HP = Application Load × Service Factor (Table 1) 3. Select pinion with horsepower capacity equal to (or greater than) design horsepower determined in Step 2. Reference Rating Pages 67, 68. 4. Select a driven gear with a catalog rating equal to (or greater than) the horsepower determined in Step 2.
Ref. Parallel shafts are approximately 98% efficient 90° shafts are approximately 50% efficient
TABLE 1 Service Factor .8 1.0 1.25 1.50 1.75 2.0
Operating Conditions Uniform – not more than 15 minutes in 2 hours. Moderate Shock – not more than 15 minutes in 2 hours. Uniform – not more than 10 hours per day. Moderate Shock – not more than 10 hours per day. Uniform – more than 10 hours per day. Heavy Shock – not more than 15 minutes in 2 hours. Moderate Shock – more than 10 hours per day. Heavy Shock – not more than 10 hours per day. Heavy Shock – more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher service factors. Consultation with factory is recommended in these applications.
66
Boston Gear 800-825-6544
P-1930-BG
04/10
Helical Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) No. Teeth
25 RPM H.P. Torque
50 RPM H.P. Torque
100 RPM H.P. Torque
200 RPM 300 RPM H.P. Torque H.P. Torque
600 RPM H.P. Torque
900 RPM H.P. Torque
1200 RPM 1800 RPM 3600 RPM H.P. Torque H.P. Torque H.P. Torque
24 DIAMETRAL PITCH – 33.94 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 10 12 15 18 20 24 30 36 48 60 72
.01 13.5 .01 13.5 .02 13.4 .04 13.2 .06 13.0 .12 12.5 .17 .01 18.0 .01 17.9 .03 17.8 .06 17.4 .08 17.1 .16 16.3 .22 .01 22.5 .02 22.3 .04 22.1 .07 21.6 .10 21.1 .19 20.0 .27 .01 29.1 .02 28.9 .05 28.5 .09 27.8 .13 27.1 .24 25.2 .34 .01 23.6 .02 23.4 .04 23.1 .07 22.4 .10 21.7 .19 19.9 .26 .01 26.8 .02 26.5 .04 26.1 .08 25.2 .12 24.3 .21 22.2 .29 .01 32.6 .03 32.3 .05 31.6 .10 30.3 .14 29.2 .25 26.1 .34 .02 41.3 .03 40.8 .06 39.7 .12 37.8 .17 36.0 .30 31.6 .40 .02 49.9 .04 49.1 .08 47.6 .14 44.9 .20 42.4 .35 36.4 .46 .03 67.0 .05 65.6 .10 63.0 .19 58.3 .26 54.3 .43 45.0 .55 .03 83.8 .06 81.6 .12 77.6 .22 70.7 .31 64.9 .50 52.0 .62 .04 101 .08 97.7 .15 92.1 .26 82.5 .36 74.8 .56 58.3 .68 20 DIAMETRAL PITCH – 28.28 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 .01 29.2 .02 29.1 .05 28.8 .09 28.4 .13 27.9 .25 26.6 .36 10 .01 37.7 .03 37.5 .06 37.1 .12 36.3 .17 35.6 .32 33.5 .45 12 .02 48.5 .04 48.2 .08 47.5 .15 46.4 .22 45.2 .40 42.2 .56 15 .02 62.7 .05 62.2 .10 61.2 .19 59.3 .27 51.6 .50 52.8 .70 20 .02 57.7 .05 57.1 .09 55.9 .17 53.7 .25 51.6 .44 46.2 .60 25 .03 73.8 .06 72.8 .11 70.9 .21 67.4 .31 64.3 .54 56.4 .72 30 .04 89.1 .07 87.6 .13 85.0 .25 80.0 .36 75.7 .62 65.0 .81 40 .05 120 .09 118 .18 113 .33 104 .46 97.2 .77 80.5 .98 50 .06 151 .12 147 .22 139 .40 127 .55 117 .89 93.4 1.11 60 .07 180 .14 175 .26 165 .47 147 .64 134 .99 104 1.22 16 DIAMETRAL PITCH – 22.63 NORMAL DIAMETRAL PITCH HARDENED STEEL 12 .03 67.2 .05 66.6 .10 65.6 .20 63.6 .29 61.7 .54 56.6 .75 16 .04 93.4 .07 92.4 .14 90.5 .28 86.9 .40 83.5 .71 74.8 .97 20 .05 120 .09 118 .18 115 .35 110 .50 104 .87 91.5 1.16 24 .06 146 .11 144 .22 139 .42 131 .59 124 1.00 107 1.33 32 .08 197 .15 193 .29 185 .54 172 .76 160 1.26 132 1.61 40 .10 249 .19 242 .37 230 .67 210 .92 193 1.47 154 1.84 48 .12 298 .23 289 .43 273 .77 244 1.05 221 1.64 173 2.02 12 DIAMETRAL PITCH – 16.97 NORMAL DIAMETRAL PITCH HARDENED STEEL 12 .07 179 .14 177 .27 173 .53 166 .76 160 1.36 143.2 1.85 15 .09 231 .18 228 .35 222 .67 211 .96 201 1.68 176 2.24 18 .11 281 .22 277 .43 268 .80 253 1.14 239 1.95 205 2.57 24 .15 387 .30 379 .58 364 1.07 337 1.49 313 2.47 260 3.16 30 .19 489 .38 477 .72 453 1.31 413 1.80 379 2.89 304 3.62 36 .23 589 .45 571 .85 538 1.53 482 2.08 437 3.24 341 3.99 10 DIAMETRAL PITCH – 14.14 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 .07 181 .14 179 .28 176 .54 171 .79 165 1.44 151 1.78 10 .10 240 .19 238 .37 233 .71 223 1.02 215 1.83 193 2.49 12 .12 300 .23 296 .46 288 .87 275 1.25 262 2.20 231 2.95 15 .15 387 .30 381 .59 369 1.10 348 1.56 329 2.69 282 3.53 20 .21 533 .41 522 .79 501 1.47 464 2.05 432 3.40 357 4.35 25 .27 680 .53 662 1.00 630 1.82 573 2.50 526 4.01 422 5.03 30 .32 818 .63 793 1.19 747 2.12 669 2.89 606 4.50 473 5.54 40 .44 1097 .84 1053 1.55 975 2.69 849 3.58 751 5.32 559 6.36 8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 .10 242 .19 239 .37 234 .71 225 1.03 216 1.85 194 2.51 10 .13 321 .25 317 .49 309 .93 293 1.33 280 2.53 245 3.12 12 .16 400 .31 394 .61 382 1.14 360 1.62 340 2.78 292 3.65 16 .22 555 .43 543 .83 521 1.53 483 2.14 447 3.54 372 4.53 20 .28 710 .55 692 1.04 658 1.90 599 2.62 550 4.20 441 5.26 24 .34 862 .66 836 1.25 787 2.24 706 3.04 639 4.75 499 5.84 32 .46 1160 .88 1113 1.64 1031 2.85 897 3.78 794 5.63 591 6.72 40 .58 1454 1.10 1383 2.00 1259 3.39 1068 4.41 927 6.32 664 7.39 48 .69 1137 1.30 1636 2.33 1466 3.85 1214 4.93 1036 6.85 719 7.87
.250-.375" FACE 12.0 15.5 18.9 23.5 18.4 20.4 23.7 28.1 31.9 38.4 43.4 47.8
.22 .28 .34 .42 .33 .36 .41 .48 .54 .64 .71 .77
11.6 14.8 17.9 22.0 17.1 18.8 21.6 25.3 28.4 33.5 37.3 40.5
25.4 31.7 39.5 48.8 41.9 50.2 56.9 68.7 78.0 85.4
.46 .57 .71 .86 .73 .86 .96 1.14 1.27 1.38
24.3 30.1 37.1 45.4 38.3 45.2 50.7 59.9 66.9 72.3
52.3 67.8 81.5 93.3 113 129 141
.93 1.18 1.40 1.58 1.87 2.11 2.28
48.6 62.0 73.4 83.0 98.4 111 120
130 157 180 222 254 279
2.26 2.69 3.05 3.68 4.14 4.50
119 142 160 193 218 237
139 174 206 247 305 352 388 445
2.45 3.03 3.55 4.19 5.06 5.75 6.25 7.04
129 159 186 220 266 302 328 370
176 218 256 318 368 409 471 517 551
3.06 3.74 4.34 5.27 6.01 6.59 7.44 8.07 8.50
160 197 228 277 316 346 391 424 447
.31 .39 .46 .56 .43 .47 .53 .60 .66 .76 .83 .89
10.8 .51 8.9 13.6 .62 10.9 16.2 .72 12.6 19.6 .84 14.8 15.0 .62 10.9 16.3 .67 11.7 18.5 .73 12.8 21.1 .81 14.1 23.3 .86 15.1 26.6 .94 16.5 29.0 1.00 17.5 31.0 1.00 18.2 .375-.563" FACE .64 22.3 1.00 18.0 .78 27.2 1.20 21.2 .95 33.2 1.44 25.1 1.14 39.8 1.66 29.0 .93 32.7 1.30 22.7 1.08 37.7 1.44 25.2 1.19 41.5 1.54 27.0 1.36 47.7 1.69 29.6 1.49 52.1 1.79 31.4 1.58 55.4 1.86 32.5 .500" FACE 1.20 42.6 1.80 31.1 1.51 52.9 2.10 36.7 1.75 61.3 2.34 41.0 1.94 68.1 2.52 44.2 2.24 78.4 2.78 48.7 2.46 86.2 3.00 51.8 2.62 91.8 3.08 53.9 .750" FACE 2.89 101 4.01 70.2 3.37 118 4.51 79.0 3.75 131 4.86 85.1 4.39 154 5.45 95.5 4.84 170 5.82 102 5.17 181 6.08 106 .875" FACE 3.20 112 4.62 80.9 3.88 136 5.39 94.4 4.46 156 6.01 105 5.16 181 6.69 117 6.05 212 7.51 131 6.72 235 8.09 142 7.18 252 8.44 148 7.89 276 8.97 157 .750" FACE 3.91 137 5.43 95 4.69 164 6.27 110 5.33 187 6.92 121 6.30 221 7.82 137 7.03 246 8.45 148 7.57 265 8.90 156 8.34 292 8.88 311
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line exceed 1500 Feet per Minute and should be used for interpolation purposes only. *Torque Rating (Lb. Ins.)
P-1930-BG
04/10
Boston Gear 800-825-6544
67
B
Helical Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) No. Teeth
25 RPM H.P. Torque
50 RPM H.P. Torque
100 RPM H.P. Torque
200 RPM 300 RPM H.P. Torque H.P. Torque
600 RPM 900 RPM H.P. Torque H.P. Torque
1200 RPM 1800 RPM 3600 RPM H.P. Torque H.P. Torque H.P. Torque
8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 10 12 16 20 24 32
B
.13 323 .25 319 .50 313 .95 300 1.4 288 2.5 258 3.3 234 .17 428 .34 422 .65 412 1.20 391 1.8 373 3.1 327 4.2 291 .21 534 .42 525 .81 509 1.50 480 2.2 453 3.7 389 4.9 341 .29 740 .57 725 1.1 696 2.00 644 2.9 599 4.7 496 6.1 423 .38 947 .73 923 1.4 877 2.50 799 3.5 733 5.6 588 7.0 491 .46 1150 .88 1114 1.7 1050 3.00 941 4.1 852 6.3 665 7.7 545 .61 1547 1.20 1485 2.2 1374 3.80 1196 5.0 1059 7.5 788 9.0 628 8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH BRONZE 8 .04 97 .08 95.8 .15 93.8 .29 90.0 .41 86.5 .74 77.5 1.00 70.2 10 .05 128 .10 127 .20 123 .37 117 .53 112 .93 98.1 1.25 87.3 12 .06 160 .12 158 .24 153 .46 144 .65 136 1.11 117 1.46 102 16 .09 222 .17 217 .33 209 .61 193 .86 180 1.42 149 1.81 127 20 .11 284 .22 277 .42 263 .76 240 1.05 220 1.68 176 2.10 147 24 .14 345 .27 334 .50 315 .90 282 1.22 256 1.90 199 2.33 163 32 .18 464 .35 445 .65 412 1.14 359 1.51 318 2.75 236 2.69 188 40 .23 582 .44 553 .80 504 1.36 427 1.76 371 2.53 266 2.95 207 48 .28 695 .52 655 .93 587 1.54 486 1.97 414 2.74 288 3.15 220 6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 .01 572 .45 564 .87 548 1.65 520 2.35 494 4.09 430 5.44 381 9 .26 664 .52 653 1.00 633 1.89 597 2.68 564 4.61 484 6.06 424 10 .30 758 .59 745 1.14 720 2.14 674 3.02 634 5.11 537 6.66 466 12 .37 944 .73 924 1.41 887 2.61 821 3.64 764 6.02 633 7.71 540 15 .48 1217 .94 1185 1.79 1127 3.26 1026 4.48 942 7.19 755 9.00 630 18 .59 1478 1.14 1433 2.14 1350 3.84 1210 5.22 1096 8.14 855 10.00 700 20 .66 1670 1.28 1613 2.40 1511 4.25 1340 5.73 1204 8.79 924 10.69 749 24 .80 2024 1.54 1942 2.85 1798 4.97 1565 6.60 1386 9.82 1031 11.72 821 30 1.01 2546 1.92 2420 3.50 2203 5.93 1868 7.72 1622 11.06 1162 12.92 905 36 1.21 3048 2.28 2872 4.08 2573 6.76 2131 8.65 1818 12.02 1262 13.81 967 6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH HARDENED STEEL 8 .28 715 .56 705 1.09 685 2.06 650 2.94 617 5.12 537 6.79 476 10 .38 948 .74 931 1.43 899 2.67 842 3.77 792 6.39 672 8.32 583 12 .47 1180 .92 1155 1.76 1109 3.26 1026 4.55 955 7.53 791 9.64 675 15 .60 1521 1.18 1482 2.24 1409 4.07 1282 5.60 1177 8.99 944 11.25 788 18 .73 1848 1.42 1791 2.68 1687 4.80 1512 6.52 1370 10.17 1068 12.50 876 24 1.00 2529 1.93 2428 3.57 2247 6.21 1956 8.24 1732 12.27 1289 14.65 1026 6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH BRONZE 12 .15 378 .29 370 .56 355 1.04 328 1.46 306 2.41 253 3.08 216 15 .19 487 .38 474 .72 451 1.30 410 1.79 377 2.88 302 3.60 252 18 .23 591 .45 513 .86 540 1.54 484 2.09 439 3.25 342 4.00 280 20 .26 668 .51 645 .96 604 1.70 536 2.29 482 3.52 369 4.28 300 24 .32 810 .62 777 1.14 719 1.99 626 2.64 554 3.93 412 4.69 328 30 .40 1018 .77 968 1.40 881 2.37 747 3.09 649 4.42 465 5.17 362 36 .48 1219 .91 1149 1.63 1029 2.70 852 3.46 727 4.81 505 5.52 387
1.000" FACE 4.1 5.0 5.8 7.0 8.0 8.8 9.9 1.22 1.50 1.73 2.11 2.41 2.64 2.98 3.23 3.40 6.50 7.19 7.84 8.97 10.30 11.30 11.99 12.98 14.11 14.92 8.13 9.80 11.21 12.87 14.12 16.23 3.59 4.12 4.52 4.80 5.19 5.65 5.97
214 262 304 370 421 462 521
5.2 6.3 7.1 8.4 9.3 10.1 11.1
183 219 249 294 328 352 389
7.2 8.4 9.2 10.4 11.1 11.9 12.7 .750" FACE 64.2 1.56 54.8 2.17 78.7 1.88 65.7 2.51 91.1 2.13 74.7 2.77 111 2.52 88.2 3.13 126 2.81 98.4 3.38 138 3.03 106 3.56 156 3.34 117 169 3.55 124 179 1.000" FACE 342 8.09 283 10.70 378 8.84 310 11.47 412 9.54 334 12.17 471 10.71 375 13.29 541 12.04 421 14.48 593 12.98 454 15.25 630 13.65 478 682 14.55 510 741 15.54 544 783 1.250" FACE 427 10.11 354 13.37 515 11.93 418 15.22 589 13.38 469 16.61 676 15.04 527 18.10 742 16.22 568 19.06 852 18.19 637 1.000" FACE 188 4.28 150 5.32 216 4.81 169 5.79 237 5.19 182 6.10 252 5.46 191 273 5.82 204 296 6.22 218 313
127 146 162 182 197 208 221 38.0 43.9 48.4 54.7 59.2 62.3
187 201 213 233 253 267
234 266 291 317 334
93.1 101 107
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line exceed 1500 Feet per Minute and should be used for interpolation purposes only. *Torque Rating (Lb. Ins.)
68
Boston Gear 800-825-6544
P-1930-BG
04/10
Miter & Bevel Gears Section Contents
C CATALOG NUMBER / DIMENSIONS MITER GEARS............................................................................................................................ 70-72 SPIRAL MITER GEARS .................................................................................................................... 73 BEVEL GEARS ............................................................................................................................ 74-77 SPIRAL BEVEL GEARS.................................................................................................................... 78 SELECTION PROCEDURE .......................................................................................................................79 HORSEPOWER AND TORQUE RATINGS MITER GEARS............................................................................................................................ 80-81 BEVEL GEARS .................................................................................................................................. 82 SPIRAL MITER GEARS .................................................................................................................... 83 SPIRAL BEVEL GEARS.................................................................................................................... 83 STOCK ALTERED / CUSTOM MITER AND BEVEL GEARS................................................................. 3-5 MITER / BEVEL GEAR ENGINEERING INFORMATION ............................................................... 307-309
P-1930-BG
04/10
Boston Gear 800-825-6544
69
Miter Gears 48 through 20 Diametral Pitch (Nylon, Brass, Stainless Steel & Steel – Unhardened) 1:1 Ratio 20° Pressure Angle All gears have “Coniflex”® tooth form, except as noted. MOUNTING DISTANCE FACE
PITCH DIA.
D HUB PROJ.
BORE HUB DIA.
STANDARD TOLERANCES*
REFERENCE PAGES
DIMENSION
Alterations — 314 Lubrication — 314 Materials — 315
BORE
TOLERANCE
All
±.0005
*Brass and Steel only.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
C
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Hub Dia. Proj.
48 DIAMETRAL PITCH 15 .312 .07
.125
.312
.215
Catalog Number
Item Code
Catalog Item Number Code BRASS G460Y† 12126 — — G461Y† 12128 — —
STAINLESS STEEL STEEL UNHARDENED GSS460Y† 49984 — — — — — — GSS461Y† 49985 L94Y† 12140 — — — —
.13 .19 .16 .25
MOLDED NYLON GP4815†‡ 54096 GP4818Y† 54097 — — GP4824Y† 54098
Catalog Number
Item Code
Catalog Item Number Code
18
.375
.08
.125
.406
.286
24
.500
.08
.1875
.531
.375
.25 .33 .31 .38
DIAMETRAL PITCH 16 .500 .12
.1875
.500
24
.1875
.688
.349 .406 .427
.41 .50 .50
.19 .19 .25
GP3216Y† GP3224Y† —
54099 54100 —
G462Y† — G463Y†
12114 — 12116
GSS462Y† — GSS463Y†
49986 — 49987
L97Y† — L95Y†
12146 — 12142
.1875
.500
.349
.41
.19
—
—
—
—
—
—
L93Y
12138
GP2424Y† — GP2430Y† GP2436Y†
54101 — 54102 54103
— G464Y G465Y G466Y
— 12100 12102 12104
— — — —
— — — —
— L96Y — —
— 12144 — —
—
—
—
—
—
—
L98Y
12148
32
.750
.14
30 DIAMETRAL PITCH 15 .500 .12
24 DIAMETRAL PITCH 24
1.000
.20
.250
.906
.567
.62
30 36
1.250 1.500
.23 .23
.250 .3125
1.031 1.188
.590 .620
.62 .69
.19 .28 .31 .31
.250
.672
.489
.50
.31
20 DIAMETRAL PITCH 12 .600 .13
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †Not “Coniflex” tooth form. Can be furnished with “Coniflex” tooth on special order. ‡Acetal.
70
Boston Gear 800-825-6544
P-1930-BG
04/10
Miter Gears 16 through 10 Diametral Pitch (Nylon & Steel – Unhardened & Hardened) 1:1 Ratio 20° Pressure Angle All gears have “Coniflex”® tooth form, except as noted. All hardened steel gears have teeth only hardened, except as noted, and are equipped with standard keyways and setscrews MOUNTING DISTANCE KEYWAY FACE
PITCH DIA.
D
SETSCREW
HUB PROJ.
BORE HUB DIA.
REFERENCE PAGES STANDARD TOLERANCES* DIMENSION BORE
Alterations — 314 Horsepower Ratings — 80, 81 Lubrication — 314 Materials — 315 Selection Procedure — 79
TOLERANCE
All
±.0005
*Steel only. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Dia.
Hub Proj.
16 DIAMETRAL PITCH 12 .750 .16 16 1.000 .23 20 1.250 .28 24 1.500 .32 32 2.000 .39
.3125 .375 .4375 .500 .500
.812 1.062 1.250 1.375 1.562
.583 .755 .849 .880 .875
.62 .75 1.00 1.00 1.25
.38 .44 .50 .50 .38
.375 .4375
1.062
.739
.88
.50
1.250
.864
1.00
.50
1.500
1.021
1.25
.63
1.750
1.192
1.38
.69
1.875 2.312
1.224 1.489
1.31 1.62
.69 .84
2.000
1.364
1.62
.81
2.438
1.630
2.00
.94
Catalog Number
Item Code
MOLDED NYLON — — GP1616Y† 54104 — — — — GP1632Y†‡ 54105
Catalog Number
Item Code
STEEL UNHARDENED L99Y 12150 L110Y 12174 L111Y 12176 L112Y 12156 — —
Catalog Number
C
Item Code
STEEL HARDENED — — HLK110Y** 12326 — — — — — —
14 DIAMETRAL PITCH 14
1.000
.20
— —
— —
L124Y L100Y
12202 12152
— —
— —
— — — — — — — — — — —
— — — — — — — — — — —
L125Y L126Y L101Y L127Y L102Y L119Y L120Y L121Y L133Y L113Y L114Y
12204 12206 12154 12208 12158 12190 12192 12194 12218 12178 12180
— — HLK101Y** — HLK102Y — — HLK121Y — — HLK114Y
— — 12328 — 12330 — — 12334 — — 12332
— — — — — —
— — — — — —
L128Y L129Y L103Y L130Y L104Y L131Y
12210 12212 12160 12214 12162 12216
— HLK129Y HLK103Y HLK130Y HLK104Y HLK131Y
— 12348 12344 12350 12346 12352
12 DIAMETRAL PITCH 15
1.250
.29
18
1.500
.33
21
1.750
.40
24 30
2.000 2.500
.44 .55
.375 .4375 .500 .500 .625 .500 .5625 .625 .750 .500 .625
10 DIAMETRAL PITCH 20
2.000
.45
25
2.500
.56
.500 .625 .750 .750 .875 1.000
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †Not “Coniflex” tooth form. **Hardened all over. ‡Nylon (Mineral Filled).
P-1930-BG
04/10
Boston Gear 800-825-6544
71
Miter Gears 8 through 4 Diametral Pitch (Steel – Unhardened, Hardened & Cast Iron) 1:1 Ratio 20° Pressure Angle All gears have “Coniflex”® tooth form, except as noted. All hardened steel gears have teeth only hardened, except as noted, and are equipped with standard keyways and setscrews. All unhardened steel gears have no keyway and no setscrew. MOUNTING DISTANCE KEYWAY FACE
PITCH DIA.
D
SETSCREW
HUB PROJ.
BORE HUB DIA.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 80, 81 Lubrication — 314 Materials — 315 Selection Procedure — 79
STANDARD TOLERANCES DIMENSION BORE
All
Catalog Number
Item Code
TOLERANCE ±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
C
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Dia.
Hub Proj.
8 DIAMETRAL PITCH .66 24 3.000 .68
28 32
3.500
.77
4.000
.77 .85 .85
.750 1.000 1.250 1.000 1.1875 1.250 .875 1.000 .875
2.562
1.583
1.75
.81
2.750
1.786
2.50
1.00
3.250
2.099
2.50
1.25
2.875 3.625 3.438
1.724 2.286 2.098
2.00 3.00 2.25
.88 1.13 1.12
1.250 1.500 1.250 1.500 1.000 1.125
3.625
2.317
3.00
1.31
4.125
2.630
3.25
1.50
4.250 4.625
2.640 2.605
2.50 2.88
1.38 1.19
4.625
3.005
3.50
1.75
5.500
2.660
3.75
1.00
5.500
3.567
4.00
1.94
6.000
3.630
5.00
1.94
Catalog Number
Item Code
Catalog Number
Item Code
STEEL UNHARDENED L115Y 12182 L105Y-A 12164 L116Y 12184 L117Y 12186 L132Y 12196 L106Y 12166 — — L123Y 12200 — —
STEEL HARDENED HLK115Y 12366 HLK105YA 12362 HLK116Y 12368 HLK117Y 12370 HLK132Y 12374 HLK106Y 12364 — — HLK123Y 12372 — —
CAST IRON — — — — — — — — — — — — OA828Y-1 12418 — — OA832Y-1 12420
L118Y L107Y L134Y L135Y — —
12188 12168 12220 12222 — —
HLK118Y HLK107Y — — — —
12386 12384 — — — —
OA624Y† — — — OA630Y-1 OA636Y-1
12412 — — — 12414 12416
L122Y L136Y L108Y —
12198 12224 12170 —
HLK122Y — HLK108Y —
12398 — 12396 —
— OA525Y — OA540Y-1
— 12408 — 12410
L137Y L109Y L138Y
12226 12172 12228
— HLK109Y —
— 12404 —
— OA424Y** —
— 12406 —
6 DIAMETRAL PITCH 24
4.000
.87
27
4.500
.96
30 36
5.000 6.000
1.16 1.28
5 DIAMETRAL PITCH 25
5.000
1.12
40
8.000
1.50
1.375 1.500 1.750 1.375
4 DIAMETRAL PITCH 24
6.000
1.35
28
7.000
1.43
1.500 1.750 2.000
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †Hub Dia. — 2.750" **Hub Proj. — 2.000"
72
Boston Gear 800-825-6544
P-1930-BG
04/10
Spiral Miter Gears 18 through 5 Diametral Pitch (Steel – Unhardened & Hardened) 1:1 Ratio 20° Pressure Angle – 35° Spiral Angle All hardened steel gears have teeth only hardened, except as noted, and are equipped with standard keyways and setscrews MOUNTING DISTANCE FACE
PITCH DIA.
D HUB PROJ.
BORE HUB DIA.
STANDARD TOLERANCES DIMENSION BORE
REFERENCE PAGES
TOLERANCE
All
Alterations — 314 Horsepower Ratings — 83 Lubrication — 314 Materials — 315 Selection Procedure — 79
±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Dia.
Hub Proj.
18 DIAMETRAL PITCH 18
1.000
.22
.375
1.062
.739
.75
.44
Catalog Number
Item Code
Catalog Number
C
Item Code
STEEL UNHARDENED LSA110Y-R 12310 LSA110Y-L 12312
STEEL HARDENED HLSK110Y-R† 12322 HLSK110Y-L† 12324
LSA101Y-R LSA101Y-L LSA102Y-R LSA102Y-L
12282 12284 12286 12288
HLSK101Y-R† HLSK101Y-L† HLSK102Y-R HLSK102Y-L
12336 12338 12340 12342
12290 12292 12294 12296
HLSK103Y-R HLSK103Y-L HLSK104Y-R HLSK104Y-L
12354 12356 12358 12360
12 DIAMETRAL PITCH 15
1.250
.30
.500
1.250
.864
1.00
.50
18
1.500
.34
.625
1.500
1.021
1.25
.56
10 DIAMETRAL PITCH 20
2.000
.47
.750
2.000
1.364
1.62
.78
25
2.500
.58
.875
2.438
1.630
2.00
.91
LSA103Y-R LSA103Y-L LSA104Y-R LSA104Y-L
1.1875
3.250
2.099
2.50
1.25
LSA106Y-R LSA106Y-L
12302 12304
HLSK106Y-R HLSK106Y-L
12376 12378
1.000
2.750
1.786
2.50
.88
LSA105YA-R LSA105YA-L
12298 12300
HLSK105YA-R HLSK105YA-L
12380 12382
12314 12316 12306 12308
HLSK118Y-R HLSK118Y-L HLSK107Y-R HLSK107Y-L
12392 12394 12388 12390
12318 12320
HLSK122Y-R HLSK122Y-L
12400 12402
8 DIAMETRAL PITCH 28
3.500
.78
7 DIAMETRAL PITCH 21
3.000
.69
6 DIAMETRAL PITCH 3.625
2.317
3.00
1.31
LSA118Y-R LSA118Y-L LSA107Y-R LSA107Y-L
4.625
3.005
3.50
1.75
LSA122Y-R LSA122Y-L
1.250 24
4.000
.89 1.500
5 DIAMETRAL PITCH 25
5.000
1.15
1.375
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †Hardened all over. P-1930-BG
04/10
Boston Gear 800-825-6544
73
Bevel Gears 48 through 20 Diametral Pitch (Brass, Stainless Steel & Steel – Hardened & Unhardened) 20° Pressure Angle All gears have “Coniflex”® tooth form, except as noted. All hardened steel gears have teeth only hardened and are equipped with standard keyways and setscrews, except as noted. MOUNTING DISTANCE
KEYWAY
D
FACE PITCH DIA.
MOUNTING DISTANCE
D BORE
HUB DIA.
SETSCREW
HUB PROJ.
PITCH DIA.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
STANDARD TOLERANCES DIMENSION BORE
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
C
Ratio
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Hub Dia. Proj.
Catalog Number
Item Code
48 DIAMETRAL PITCH 36 .750 2:1 18 .375 36 .750 3:1 12 .250
Item Code
12136 12134 12132 12130
STAINLESS STEEL GSS479Y-G† 49991 GSS479Y-P† 49990 GSS478Y-G† 49989 GSS478Y-P† 49988
12120 12118 12108 12106
GSS481Y-G† GSS481Y-P† GSS486Y-G† GSS486Y-P†
49993 49992 49995 49994
— — — —
— — — —
.09
.1875 .125 .1875 .125
.438 .594 .375 .562
.257 .335 .257 .285
.44 .28 .44 .22
.19 .19 .19 .17
BRASS G479Y-G† G479Y-P† G478Y-G† G478Y-P†
.14
.1875
.24
.3125 .1875
.594 .719 .688 1.250
.382 .365 .445 .500
.56 .38 1.00 .38
.25 .17 .31 .22
G481Y-G† G481Y-P† G486Y-G† G486Y-P†
.24
.250 .1875 .3125 .250
.781 1.062 .938 1.375
.460 .540 .507 .630
.88 .56 1.12 .69
.31 .25 .31 .28
G485Y-G 12124 G485Y-P 12122 G487Y-G 12112 G487Y-P 12110 STEEL UNHARDENED L147Y-G 12234 L147Y-P 12236 — — — —
.12
Catalog Number
32 DIAMETRAL PITCH 32 1.000 2:1 16 .500 64 2.000 4:1 16 .500
24 DIAMETRAL PITCH 36 1.500 18 .750 2:1 48 2.000 24 1.000
.26
20 DIAMETRAL PITCH 20 1.000 10 .500 2:1 20 1.000 10 .500
.18 .18
.375 .1875 .375 .1875
.688 .750 .688 .750
.460 .425 .460 .425
.75 .41 .75 .41
.31 .25 .31 .25
STEEL HARDENED — — — — HL147Y-G‡ 11854 HL147Y-P‡ 11856
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †Not “Coniflex” tooth form. Can be furnished with “Coniflex” tooth on special order. ‡These gears have No. 47 (.0785) drilled hole in hub. No keyway or setscrew.
74
Boston Gear 800-825-6544
P-1930-BG
04/10
Bevel Gears 16 through 12 Diametral Pitch (Steel – Unhardened, Hardened & Cast Iron) 20° Pressure Angle All gears have “Coniflex”® tooth form. All Hardened steel gears have teeth only hardened and are equipped with standard keyways and setscrews. MOUNTING DISTANCE D FACE PITCH DIA. D BORE
HUB DIA.
MOUNTING DISTANCE
HUB PROJ.
PITCH DIA.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 82 Lubrication — 314 Materials — 315 Selection Procedure — 79
STANDARD TOLERANCES DIMENSION BORE
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Ratio
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Hub Dia. Proj.
16 DIAMETRAL PITCH 24 1.500 16 1.000 1-1/2:1 24 1.500 16 1.000 24 1.500 12 .750 2:1 32 2.000 16 1.000 48 3.000 3:1 16 1.000 64 4.000 4:1 16 1.000 96 6.000 6:1 16 1.000
.26 .26 .20 .19 .36 .42 .49 .62
.500 .375 .500 .375 .500 .375 .500 .375 .625 .4375 .625 .500 .625 .500
1.188 1.250 1.188 1.250 1.000 1.125 1.188 1.500 1.312 2.000 1.375 2.500 1.688 3.750
.760 .740 .750 .740 .625 .575 .775 .845 .882 .920 .898 .990 1.257 1.375
1.12 .81 1.12 .81 1.00 .66 1.12 .81 1.50 .88 2.25 .81 1.75 .94
.56 .44 .56 .44 .44 .34 .50 .44 .56 .47 .56 .47 .88 .72
.500 .375 .500
1.375
.945
1.62
.66
1.625
.965
.81
.56
1.750
1.135
1.50
.78
1.875 1.875 2.375 1.875
1.130 1.275 1.385 1.275
1.25 2.12 1.31 2.12
.66 .88 .81 .88
2.375
1.375
1.31
.81
Catalog Item Number Code
Catalog Item Number Code
STEEL UNHARDENED L146Y-G 12230 L146Y-P 12232 — — — — L148Y-G 12238 L148Y-P 12240 L149Y-G 12242 L149Y-P 12244 — — — — — — — — — — — —
STEEL HARDENED — — — — HL146Y-G 11850 HL146Y-P 11852 HL148Y-G 11858 HL148Y-P 11860 HL149Y-G 11862 HL149Y-P 11864 — — — — — — — — — — — —
Catalog Number
C
Item Code
CAST IRON GEARS STEEL PINIONS — — — — — — — — — — — — — — — — PA3316Y-G 12484 PA3316Y-P 12486 PA4416Y-G 12492 PA4416Y-P 12494 PA6616Y-G 12516 PA6616Y-P 12518
14 DIAMETRAL PITCH 28 2.000 2:1 14 1.000
.36 .35
L150Y-G 12246 HL150Y-G 11866 — — HL150Y-P 11868 L150Y-P 12248 — —
— — —
— — —
L151Y-G — L151Y-P L152BY-G L152BY-P L152Y-G — L152Y-P
— — — — — — — —
— — — — — — — —
12 DIAMETRAL PITCH 1-1/2:1
27
2.250
.42
2:1
18 36 18 36
1.500 3.000 1.500 3.000
.41 .54 .54 .54
18
1.500
.53
.500 .750 .500 .625 .500 1.000 .625 .750
12250 — 12254 12260 12262 12256 — 12258
— HL151Y-G HL151Y-P — — HL152Y-G HL152Y-P —
— 11870 11872 — — 11874 11876 —
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308.
P-1930-BG
04/10
Boston Gear 800-825-6544
75
Bevel Gears 12 and 10 Diametral Pitch (Steel – Unhardened, Hardened & Cast Iron) 20° Pressure Angle All gears have “Coniflex”® tooth form. All Hardened steel gears have teeth only hardened and are equipped with standard keyways and setscrews. MOUNTING DISTANCE D FACE PITCH DIA.
MOUNTING DISTANCE
D BORE
HUB DIA.
HUB PROJ.
PITCH DIA.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 82 Lubrication — 314 Materials — 315 Selection Procedure — 79
STANDARD TOLERANCES DIMENSION BORE
All
TOLERANCE ±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
C
Ratio
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Hub Dia. Proj.
Catalog Item Number Code
Catalog Item Number Code
STEEL UNHARDENED — — — — — — — — — — — — — — — — — — — —
STEEL HARDENED — — — — — — — — — — — — — — — — — — — —
12 DIAMETRAL PITCH 36 3.000 18 1.500 2:1 48 4.000 24 2.000 54 4.500 3:1 18 1.500 72 6.000 4:1 18 1.500 72 6.000 6:1 12 1.000
.625 .500 .625 .500 .625 .500 .750 .500 .750 .500
1.500 2.250 2.000 2.875 1.750 3.000 2.000 3.750 1.750 3.750
.882 1.205 1.180 1.440 1.063 1.350 1.320 1.365 1.320 1.495
1.44 1.25 1.63 1.50 1.75 1.25 2.00 1.25 2.00 .94
.50 .69
2.250
1.445
2.50
1.00
.72
.750 1.000 .750 .875 .750 1.250 .875
.71
.750
.79
1.000 .875 .875 .750 .875 .625 1.000 .625
2.500 2.500 3.125 2.500 3.125 2.625 3.375 2.750 4.375 2.750 4.375 2.250 3.875 2.500 5.500
1.525 1.695 1.805 1.695 1.805 1.600 1.555 1.865 2.155 1.913 2.155 1.632 1.610 1.820 1.870
1.75 3.00 1.75 3.00 1.75 2.00 2.00 3.00 1.75 3.00 1.75 2.50 1.44 2.75 1.44
.91 1.19 1.06 1.19 1.06 1.00 .75 1.38 1.31 1.38 1.31 1.13 .84 1.31 .97
.47 .59 .60 .61 .74
.75 .75 .69 .95 .72 .95 .72
Catalog Number
Item Code
CAST IRON GEARS STEEL PINIONS PA3212Y-G 12480 PA3212Y-P 12482 PA4212Y-G 12488 PA4212Y-P 12490 PA45312Y-G 12532 PA45312Y-P 12534 PA6412Y-G 12508 PA6412Y-P 12510 PA6612Y-G 12512 PA6612Y-P 12514
10 DIAMETRAL PITCH 1 1/2:1
2:1
3:1 4:1 6:1
30
3.000
.58
20 40 20 40 20 50 25 60 20 60 20 60 15 90 15
2.000 4.000 2.000 4.000 2.000 5.000 2.500 6.000 2.000 6.000 2.000 6.000 1.500 9.000 1.500
.58 .72
.79 .73 .86
L153Y-G — L153Y-P L155Y-G L155Y-P — — — — L157Y-G L157Y-P — — — — — —
12264 — 12266 12268 12270 — — — — 12274 12276 — — — — — —
— HL153Y-G HL153Y-P — — HL155Y-G HL155Y-P — — — — — — — — — —
— 11878 11880 — — 11882 11884 — — — — — — — — — —
— — — — — — — PA5210Y-G PA5210Y-P — — PA6310Y-G PA6310Y-P PA6410Y-G PA6410Y-P PA9610Y-G PA9610Y-P
— — — — — — — 12496 12498 — — 12500 12502 12504 12506 12524 12526
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308.
76
Boston Gear 800-825-6544
P-1930-BG
04/10
Bevel Gears 8 through 4 Diametral Pitch (Steel – Unhardened, Hardened & Cast Iron) 20° Pressure Angle All gears have “Coniflex”® tooth form. All Hardened steel gears have teeth only hardened and are equipped with standard keyways and setscrews. MOUNTING DISTANCE
KEYWAY
D
FACE PITCH DIA. D BORE
HUB DIA.
SETSCREW
MOUNTING DISTANCE
HUB PROJ.
PITCH DIA.
REFERENCE PAGES STANDARD TOLERANCES DIMENSION BORE
Alterations — 314 Horsepower Ratings — 82 Lubrication — 314 Materials — 315 Selection Procedure — 79
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Ratio
No. of Teeth
Pitch Dia.
Face
Bore
MD *
D
Dia.
Hub Proj.
8
2:1
3:1 4:1
5.000
20 40 20 48 16 64 16 72 18
2.500 5.000 2.500 6.000 2.000 8.000 2.000 9.000 2.250
Catalog Item Number Code
Catalog Number
Item Code
1.000 1.500 1.000 1.000 .875 .875 .750 1.000 .875 1.125 .875
2.875
1.850
3.00
1.25
4.000 2.875 4.000 2.375 4.250 2.750 5.250 3.250 5.750
2.290 1.850 2.290 1.632 2.085 1.882 2.105 2.320 2.470
2.12 3.00 2.12 2.75 1.75 2.75 1.88 3.00 2.13
1.41 1.25 1.41 1.00 1.19 1.25 1.22 1.69 1.22
STEEL STEEL CAST IRON GEARS UNHARDENED HARDENED STEEL PINIONS L156Y-G 12252 — — — — — — HL156Y-G 11886 — — L156Y-P 12272 HL156Y-P 11888 — — — — — — PA528Y-G 12424 — — — — PA528Y-P 12426 — — — — PA638Y-G 12436 — — — — PA638Y-P 12438 — — — — PA848Y-G 12452 — — — — PA848Y-P 12454 — — — — PA948Y-G 12460 — — — — PA948Y-P 12462
1.125 1.750 1.125 1.125 1.000 1.125 1.000 1.125 1.000 1.125 .875
3.500 4.750 3.500 4.750 3.500 4.750 3.750 5.000 3.438 5.438 3.000 5.250
2.260 2.765 2.260 2.765 2.260 2.765 2.305 2.515 1.898 2.560 2.132 2.575
3.25 2.50 3.25 2.50 3.25 2.50 3.50 2.50 3.25 2.62 3.25 2.12
1.50 1.59 1.50 1.59 1.50 1.59 1.50 1.25 1.00 1.25 1.25 1.44
L158Y-G 12278 — — — L158Y-P 12280 — — — — — HL158Y-G 11890 — — — HL158Y-P 11892 — — — — — PA626Y-G — — — — PA626Y-P — — — — PA726Y-G — — — — PA726Y-P — — — — PA826Y-G — — — — PA826-Y-P — — — — PA7536Y-G — — — — PA7536Y-P
1.32
1.125 1.000 1.250 1.000
3.500 4.375 3.750 5.875
2.257 2.390 2.507 2.685
3.25 2.62 3.75 2.62
1.38 1.28 1.69 1.31
— — — —
— — — —
— — — —
— — — —
PA625Y-G PA625Y-P PA935Y-G PA935Y-P
12428 12430 12456 12458
1.40
1.125 1.125
4.250 6.000
2.695 3.350
3.75 3.25
1.56 1.81
— —
— —
— —
— —
PA824Y-G PA824Y-P
12444 12446
DIAMETRAL PITCH 40
Catalog Item Number Code
.83 .83 .83 .84 .85 1.23
6 DIAMETRAL PITCH 36 6.000 18 3.000 36 6.000 18 3.000 36 6.000 2:1 18 3.000 42 7.000 21 3.500 48 8.000 24 4.000 45 7.500 3:1 15 2.500
1.07 1.06 1.07 1.06 1.07 1.06 1.18 1.08
— — — — 12432 12434 12440 12442 12448 12450 12520 12522
5 DIAMETRAL PITCH 30 6.000 2:1 15 3.000 45 9.000 3:1 15 3.000
1.05
4 DIAMETRAL PITCH 32 8.000 2:1 16 4.000
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308.
P-1930-BG
04/10
Boston Gear 800-825-6544
77
C
Spiral Bevel Gears 30 through 8 Diametral Pitch (Steel – Unhardened & Hardened) 20° Pressure Angle – 35° Spiral Angle All Hardened steel gears have teeth only hardened and are equipped with standard keyways and setscrews, except as noted. All pinions are left hand. MOUNTING DISTANCE D FACE PITCH DIA. D BORE
HUB DIA.
MOUNTING DISTANCE
HUB PROJ.
PITCH DIA.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 83 Lubrication — 314 Materials — 315 Selection Procedure — 79 Ratio
C
No. of Teeth
Pitch Dia.
STANDARD TOLERANCES DIMENSION BORE
±.0005
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Face
Bore
MD *
D
Dia.
Hub Proj.
30 DIAMETRAL PITCH 26 .87 13 .43 2:1 26 .87 13 .43
All
TOLERANCE
.14 .14
Catalog Number
Item Code
Catalog Number
Item Code
.250 .1875 .375 .1875
.688 .750 .688 .750
.480 .453 .480 .453
.75 .38 .75 .38
.38 .30 .38 .30
STEEL UNHARDENED SS302-G 11938 SS302-P 11940 — — — —
STEEL HARDENED — — — — SH302-G 11914 SH302-P† 11916
.500 .3125 .625 .3125
1.000 1.062 1.000 1.062
.730 .623 .730 .623
1.12 .62 1.12 .62
.42 .33 .42 .33
SS192-G SS192-P — —
11934 11936 — —
— — SH192-G SH192-P†
— — 11910 11912
.625 .4375 .750 .4375 .750 .500 .875 .500
1.188 1.250 1.188 1.250 1.375 1.625 1.375 1.625
.760 .625 .760 .625 .855 .848 .855 .848
1.38 .81 1.38 .81 1.62 1.00 1.62 1.00
.50 .30 .50 .30 .56 .45 .56 .45
SS142-G SS142-P — — SS142-1G SS142-1P — —
11926 11928 — — 11930 11932 — —
— — SH142-G SH142-P — — SH142-1G SH142-1P
— — 11902 11904 — — 11906 11908
1.000 .625 1.1875 .625
1.875 2.375 1.875 2.375
1.135 1.219 1.135 1.219
2.00 1.50 2.00 1.50
.75 .63 .75 .63
SS102-G SS102-P — —
11922 11924 — —
— — SH102-G SH102-P
— — 11898 11900
1.250 .750 1.500 .750
2.500 3.125 2.500 3.125
1.575 1.677 1.575 1.677
2.88 1.88 2.88 1.88
1.06 .94 1.06 .94
SS82-G SS82-P — —
11918 11920 — —
— — SH82-G SH82-P
— — 11894 11896
19 DIAMETRAL PITCH 26 1.37 13 .68 2:1 26 1.37 13 .68
.25 .25
14 DIAMETRAL PITCH 26 1.86 13 .93 26 1.86 13 .93 2:1 32 2.29 16 1.14 32 2.29 16 1.14
.31 .31 .38 .38
10 DIAMETRAL PITCH 34 3.40 17 1.70 2:1 34 3.40 17 1.70
.57 .57
8 DIAMETRAL PITCH 34 4.250 17 2.125 2:1 34 4.250 17 2.125
.71 .71
*Mounting Distance (MD) must not be made less than dimension shown, see Page 308. †No keyway or setscrew.
78
Boston Gear 800-825-6544
P-1930-BG
04/10
Miter & Bevel Gears Boston stock miter and bevel gears are designed for transmission of power and/or motion between intersecting shafts at a right angle (90°). Miter gears are a special type of bevel gear designed to operate as pairs being identical in number of teeth and pitch (1 to 1 ratio only). Other Boston stock bevel gear sets are available with ratios from 1-1/2:1 to 6:1. All Boston standard stock bevels and miters are manufactured with a 20° pressure angle. These bevel gears are made in accordance with AGMA specifications for a long and short addendum system for gears and pinions, which serves to reduce the amount of pinion tooth undercut and to nearly equalize the strength and durability of the gear and pinion. Boston straight tooth bevel and miter gears have generated teeth with “Coniflex”® tooth form, unless otherwise specified.
INTERCHANGE Stock miter and bevel gears having identical diametral pitch, number of teeth and mounting distance (and spiral angle for spiral bevels) are interchangeable.
SPIRAL VS. STRAIGHT TOOTH Boston standard stock straight bevel gears can be used for all applications requiring transmission of power and motion between intersecting shafts. Boston standard stock spiral bevel gears have an overlapping tooth action which results in a smoother gear action, lower noise, and higher load capacity than a straight bevel of equal size. ®Trademark of the Gleason Works.
Selection Procedure Approximate horsepower ratings for selected sizes (number of teeth) at various operating speeds (RPM) are given for Boston standard stock Bevel and Miter gears. For straight tooth Miter gears, refer to Pages 80, 81. For straight tooth Bevel gears, refer to Page 82. For spiral tooth Miter gears, refer to Page 83. For spiral tooth Bevel gears, refer to Page 83.
1. Determine service factor. a. Using Application Classification Chart I, pages 323-324 determine service factor or b. With knowledge of operating conditions and load classification, select service factor from Table 1. 2. Determine Design Horsepower. Design HP = Application Load x Service Factor (Table 1)
All ratings are based on normal operating conditions, that is: properly mounted and lubricated, carrying a smooth load for not more than 10 hours (Service Factor = 1.0). Refer to Table 1 for service factors in other service conditions.
3. Select a gear set with horsepower capacity equal to (or greater than) design horsepower determined in Step 2.
TABLE 1 Service Factor .8 1.0 1.25 1.50 1.75 2.0
Operating Conditions Uniform — not more than 15 minutes in 2 hours. Moderate Shock — not more than 15 minutes in 2 hours. Uniform — not more than 10 hours per day. Moderate Shock — not more than 10 hours per day. Uniform — more than 10 hours per day. Heavy Shock — not more than 15 minutes in 2 hours. Moderate Shock — more than 10 hours per day. Heavy Shock — not more than 10 hours per day. Heavy Shock — more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher service factors. Consultation with factory is recommended in these applications.
P-1930-BG
04/10
Boston Gear 800-825-6544
79
C
Miter Gears Steel & Iron – Straight Tooth (1:1 Ratio) L-Series – Unhardened Steel HLK Series – Hardened Steel (Teeth only) OA Series – Cast Iron APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0) Catalog Number Pitch
50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque
L110Y L111Y L101Y L125Y L126Y HLK110Y L112Y L102Y L127Y L119Y L120Y L121Y L133Y HLK101Y L113Y HLK102Y L103Y L128Y L129Y L114Y HLK121Y L130Y L104Y L131Y HLK103Y HLK129Y OA828Y-1 L105Y-A L115Y L116Y HLK114Y OA832Y-1 HLK104Y HLK130Y HLK131Y
16
.02 .03
24.7 37.1
.03 .05
18.5 30.9
.06 .10
18.5 30.9
.09 .13
18.5 26.8
.15 .24
15.4 24.7
.21 .32
14.4 22.0
.26 .38
13.4 19.6
.33 .48
11.3 16.5
12
.03
37.1
.06
37.1
.12
37.1
.17
35.0
.29
29.9
.40
27.5
.47
24.2
.59
20.2
16
.04
49.4
.06 .07
37.1 43.2
.12 .14
37.1 43.2
.18 .20
37.1 41.2
.30 .30
30.9 30.9
.42 .44
28.8 30.2
.52 .52
26.8 26.8
.66 .64
22.6 22.0
12
.05
61.8
.09
55.6
.18
55.6
.25
51.5
.42
43.2
.56
38.4
.66
34.0
.81
27.8
12
.07
86.5
.14
86.5
.25
77.2
.35
72.1
.60
61.8
.77
52.8
.90
46.3 1.1
37.7
12
.06 74.1 .09 111 .10 124
.12 74.1 .17 105 .18 111
.24 74.1 .33 102 .36 111
.34 70.0 .45 92.6 .50 103
.58 .75 .84
59.7 77.2 86.5
.96 .96 1.1
65.9 1.1 65.9 1.1 75.5 1.3
56.6 1.3 56.6 1.3 66.9 1.6
44.6 44.6 54.9
10
.11 136
.20 124
.37 114
.52 107
.87
89.6
1.1
75.5 1.3
66.9 1.5
51.5
12
.15 185 .14 173
.29 179 .28 173
.52 161 .50 154
.71 146 .70 144
1.1 1.2
113 124
1.4 1.5
96.1 1.6 103 1.8
82.4 1.9 92.6 2.2
65.2 75.5
10
.18 222
.33 204
.61 188
.83 171
1.3
134
1.6
110
1.7
87.5 2.2
75.5
10
.20 247
.40 247
.74 229
1.0
206
1.7
175
2.2
151
2.6
134
3.1
8
.28 346
.53 327
.93 287
1.2
247
1.9
196
2.3
158
—
—
—
8
.30 371
.56 346
1.0
309
1.4
288
2.1
216
2.6
178
3.0
154
3.4
116
12 8
.29 358 .37 457
.58 358 .68 420
1.0 1.2
309 371
1.4 1.6
288 329
2.3 2.4
237 247
2.8 2.8
192 192
3.2 —
165 —
3.9 —
133 —
10
.33 408
.66 408
1.2
371
1.7
350
2.6
268
3.3
226
3.8
196
4.5
154
C
106 —
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. Use for interpolation purposes only. *Torque (Lb. Ins.) Output Rating HP (Input)
80
Boston Gear 800-825-6544
P-1930-BG
04/10
Miter Gears Steel & Iron – Straight Tooth (1:1 Ratio) L-Series – Unhardened Steel HLK Series – Hardened Steel (Teeth only) OA Series – Cast Iron APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0) Catalog Number
50 RPM 100 RPM 200 RPM 300 RPM 600 RPM 900 RPM 1200 RPM 1800 RPM Pitch HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque
L106Y L117Y L132Y OA624Y L123Y HLK105YA HLK115Y HLK116Y L107Y L118Y OA630Y-1 OA525Y L134Y L135Y HLK106Y HLK117Y HLK132Y OA636Y-1 HLK123Y L108Y L122Y L136Y HLK107Y HLK118Y OA424Y OA540Y-1 L109Y L137Y L138Y HLK108Y HLK122Y HLK109Y
8
.42
519
.79
488
1.4
432
1.9
391
2.8
288
3.4
233
3.8
196
—
—
6 8
.46 .55
568 679
.87 1.0
537 618
1.5 1.8
463 556
2.0 2.4
412 494
3.0 3.5
309 360
3.5 4.2
240 288
— 4.6
— 237
— —
— —
8
.55
679
1.1
679
2.0
618
2.7
556
4.3
443
5.3
364
5.9
304
6.9
237
6
.69
852
1.3
803
2.2
679
3.0
618
4.5
463
5.3
364
5.8
299
—
—
6 5
.82 1013 .90 1112
1.5 1.6
926 988
2.5 2.7
772 834
3.2 3.5
659 721
4.7 5.1
484 525
— —
— —
— —
— —
— —
— —
6
.90 1112
1.6
988
2.8
865
3.7
762
5.4
556
6.4
439
7.0
360
—
—
8
.80
988
1.6
988
2.8
865
3.7
762
5.7
587
6.8
467
7.6
391
—
—
6 8
1.1 1.0
1359 1235
1.9 2.0
1174 1235
3.2 3.6
988 1112
4.1 4.7
844 968
5.8 7.0
597 721
— 8.4
— 576
— 9.2
— 474
— —
— —
5
1.3
1606
2.4
1482
4.1
1266
5.3
1091
7.6
782
9.0
618
—
—
—
—
6
1.3
1606
2.6
1606
4.5
1390
6.0
1235
8.0
824
11.0
755
12.0
618
—
—
4 5
1.6 2.0
1976 2471
2.8 3.5
1729 2162
4.6 5.6
1421 1729
5.9 7.0
1215 1441
8.2 —
844 —
— —
— —
— —
— —
— —
— —
4
2.3
2841
4.2
2594
7.0
2162
8.7
1791
12.4 1276
14.3
981
—
—
—
—
4
3.0
3706
5.3
3274
8.6
2656
10.8
2224
14.6 1503
16.6 1139
—
—
—
—
5
2.4
2965
4.9
3026
8.2
2532
10.0
2059
15.0 1544
18.0 1235
—
—
—
—
4
4.2
5188
8.3
5126 14.0
4324
17.0
3500
25.0 2574
28.0 1922
—
—
—
—
C
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. Use for interpolation purposes only. *Torque (Lb. Ins.) Output Rating HP (Input)
P-1930-BG
04/10
Boston Gear 800-825-6544
81
Bevel Gears Steel & Iron – Straight Tooth L-Series/PA Series Pinions – Unhardened Steel PA Series – Cast Iron HL Series – Hardened Steel (Teeth Only) APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0) Catalog 50 RPM† 100 RPM Number Pitch Ratio HP Torque HP Torque
C
L146Y HL146Y L151Y HL151Y L153Y HL153Y L148Y HL148Y L149Y L150Y HL150Y HL149Y PA3212Y PA4212Y L152Y PA5210Y HL152Y L155Y PA528Y L156Y HL155Y PA626Y PA625Y PA726Y L158Y PA826Y HL156Y PA824Y HL158Y PA3316Y PA45312Y PA6310Y PA638Y L157Y PA7536Y PA935Y PA4416Y PA6412Y PA6410Y PA848Y PA948Y PA6616Y PA6612Y
16 .03 55.6 .06 55.6 16 .04 74.1 .08 74.1 12 1-1/2:1 .10 185 .20 185 12 .14 259 .27 250 10 .24 445 .45 417 10 .33 611 .63 584 16 .02 49.4 .03 37.1 16 .02 49.4 .04 49.4 16 2:1 .04 98.8 .09 111 14 .05 124 .09 111 14 .07 173 .13 161 16 .06 148 .12 148 12 .04 99 .09 111 12 .08 198 .16 198 12 2:1 .14 346 .27 334 10 .15 371 .28 346 12 .19 469 .37 457 10 .30 741 .58 716 8 .20 494 .38 469 8 .54 1334 1.03 1272 10 2:1 .42 1038 .81 1001 6 .40 988 .75 926 5 .43 1062 .82 1013 6 .48 1186 .89 1099 6 1.07 2644 2.02 2495 6 .63 1556 1.20 1482 8 2:1 .76 1878 1.44 1779 4 .98 2421 1.80 2224 6 1.49 3681 2.80 3459 16 .05 185 .11 204 12 .16 593 .31 574 10 .34 1260 .66 1223 8 3:1 .43 1594 .82 1519 10 .34 1260 .66 1223 6 .88 3261 1.66 3076 5 1.53 5670 2.88 5336 16 .06 296 .12 296 12 .17 840 .32 791 10 4:1 .22 1087 .42 1038 8 .43 2125 .83 2051 8 .75 3706 1.43 3533 16 6:1 .09 667 .17 630 12 .12 889 .23 852
200 RPM HP Torque
.11 .16 .37 .52 .84 1.16 .06 .09 .17 .18 .25 .23 .16 .29 .50 .51 .70 1.08 .70 1.88 1.50 1.30 1.50 1.60 3.62 2.00 2.62 3.20 5.02 .20 .59 1.21 1.52 1.21 3.03 5.16 .24 .61 .80 1.54 2.62 .33 .44
51.0 74.1 171 241 389 537 37.1 55.6 105 111 154 142 99 179 309 315 432 667 432 1161 926 803 926 988 2236 1235 1618 1976 3101 185 547 1121 1408 1121 2807 4781 296 754 988 1902 3236 611 815
300 RPM HP Torque
.16 .23 .53 .73 1.17 1.62 .09 .12 .24 .26 .36 .33 .23 .41 .72 .70 .99 1.51 .96 2.59 2.10 1.80 2.00 2.10 4.92 2.70 3.60 4.20 6.83 .30 .84 1.70 2.12 1.70 4.17 7.01 .34 .86 1.13 2.15 3.64 .48 .63
600 RPM HP Torque
900 RPM HP Torque
1200 RPM HP Torque
1800 RPM HP Torque
49.4 .29 44.8 .40 41.2 .48 37.1 .62 71.0 .41 63.3 .55 56.6 .67 51.7 .86 164 .91 141 1.19 122 1.41 109 1.74 225 1.26 195 1.65 170 1.96 151 2.41 361 1.93 298 2.47 254 2.88 222 3.44 500 2.68 414 3.44 354 4.00 309 4.77 37.1 .17 35.0 .23 31.6 .28 28.8 .37 49.4 .23 47.4 .32 43.9 .39 40.1 .52 98.8 .43 88.5 .58 79.6 .71 73.1 .91 107 .47 96.8 .64 87.8 .77 79.3 .99 148 .65 134 .88 121 1.07 110 1.38 136 .60 124 .81 111 .99 102 1.27 95 .40 82 .52 71 .62 64 .76 169 .68 140 .87 119 1.00 103 1.20 296 1.23 253 1.62 222 1.92 198 2.36 288 1.10 226 1.40 192 1.60 165 — 408 1.71 352 2.24 307 2.66 274 3.27 622 2.50 515 3.20 439 3.73 384 4.45 395 1.50 309 1.90 261 2.20 226 — 1066 4.16 856 5.21 715 5.96 614 6.97 865 3.48 716 4.45 611 5.18 533 6.18 741 2.90 597 3.50 480 4.00 412 — 824 3.10 638 3.80 522 4.30 443 — 865 3.90 803 — — — — — 2026 7.67 1579 9.43 1294 10.65 1096 12.24 — — 1112 4.00 824 4.80 659. — 1482 5.78 1190 7.24 994 8.28 852 9.68 1729 7.30 1503 7.50 1029 — — — 2812 10.65 2193 13.10 1798 14.79 1522 17.00 185 .53 164 .72 148 .88 136 1.12 519 1.44 445 1.89 389 2.24 346 2.75 1050 2.81 868 3.60 741 4.18 645 5.00 1309 3.51 1084 4.49 924 5.22 806 6.24 1050 2.81 868 3.60 741 4.18 645 5.00 2576 6.69 2066 8.38 1725 9.59 1481 11.21 4330 10.93 3375 13.44 2767 15.19 2346 17.45 280 .61 251 .83 228 1.02 210 1.30 708 1.48 609 1.94 533 2.31 476 2.83 931 1.95 803 2.56 703 3.04 626 3.74 1771 3.56 1466 4.56 1252 5.30 1091 6.33 2998 5.92 2438 7.50 2059 8.65 1781 10.21 593 .86 531 1.17 482 1.42 439 1.82 778 1.13 698 1.54 634 1.88 581 2.40
31.9 44.3 89.6 124 177 245 25.4 35.7 62.5 67.9 94.7 87.2 52.2 82.4 162 — 224 305 — 478 424 — — — 840 — 664 — 1167 115 283 515 642 515 1154 1796 4178 388 513 869 1401 375 494
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. *Torque (Lb. Ins.) Output Rating HP (Input) †RPM of Pinion
82
Boston Gear 800-825-6544
P-1930-BG
04/10
Steel Spiral Miter & Bevel Gears Steel Spiral Miter Gears (1:1 Ratio) LSA Series – Unhardened Steel HLSK Series – Hardened Steel (Teeth Only) APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0) Catalog Number
Pitch
50 RPM HP Torque
100 RPM HP Torque
200 RPM HP Torque
300 RPM 600 RPM 900 RPM HP Torque HP Torque HP Torque
1200 RPM HP Torque
1800 RPM HP Torque
LSA110Y LSA101Y LSA102Y HLSK110Y HLSK101Y LSA103Y HLSK102Y LSA104Y LSA105YA HLSK103Y LSA106Y
18 12 12 18 12 10 12 10 7 10 8
.01 .02 .03 .03 .06 .07 .10 .15 .22 .23 .34
12.4 24.7 37.1 37.1 74.1 86.5 124. 185 272. 284. 420
.02 .04 .07 .07 .13 .15 .21 .30 .44 .46 .69
12.4 24.7 43.2 43.2 80.3 92.6 130. 185. 272. 284. 426.
.04 .08 .13 .14 .26 .30 .41 .57 .84 .89 1.3
12.4 24.7 40.1 43.2 80.3 92.6 127. 176. 259. 275. 401.
.07 .13 .20 .21 .39 .44 .61 .83 1.2 1.3 1.8
.25 .45 .63 .76 1.3 1.4 2.0 2.6 3.8 4.3 5.7
12.9 23.2 32.4 39.1 66.9 72.1 103 134 196 221 293
.35 .62 .95 1.0 1.8 2.0 2.8 3.6 5.1 5.9 7.8
LSA107Y LSA118Y HLSK104Y HLSK105YA LSA122Y HLSK106Y HLSK107Y HLSK118Y HLSK122Y
6 6 10 7 5 8 6 6 5
.46 .46 .45 .67 .83 1.0 1.3 1.3 2.4
568. 568 556. 828. 1025. 1235. 1606. 1606 2965.
.90 .90 .90 1.3 1.6 2.0 2.7 2.7 4.9
556. 556 556. 803. 988. 1235. 1668. 1668 3026
525. 525 525. 772. 926. 1204. 1575. 1575 2810.
2.4 2.4 2.5 3.6 4.3 5.6 7.3 7.3 13.1
7.4 7.4 7.9 11.0 12.0 17.0 22.0 22.0 38.0
381 381 407 566 618 875 1132 1132 1956
10.0 10.0 11.1 15.0 17.0 23.0 33.0 33.0 51.0
1.7 1.7 1.7 2.5 3.0 3.9 5.1 5.1 9.1
14.4 26.8 41.2 43.2 80.3 90.6 126 171 247 268 371 494 494 515 741 885 1153 1503 1503 2697
.14 .25 .38 .42 .75 .80 1.0 1.5 2.2 2.4 3.3 4.3 4.3 4.5 6.5 7.5 10.0 13.0 13.0 23.01
14.4 25.7 39.1 43.2 77.2 82.4 103 154 226 247 340 443 443 463 669 772 1029 1338 1338 2378
.20 .35 .54 .59 1.0 1.1 1.6 2.0 3.0 3.4 4.5 5.9 5.9 6.1 9.0 10.0 13.0 17.0 17.0 30.0
13.7 24.0 37.1 40.5 68.6 75.5 110 137 206 233 309 405 405 419 618 686 892 1167 1167 2059
12.0 21.3 32.6 34.3 61.8 68.6 96.1 124 175 202 268 343 343 381 515 583 789 1132 1132 1750
C Steel Spiral Bevel Gears** (2:1 Ratio) SS-Series – Unhardened Steel SH Series – Hardened Steel (Teeth Only) APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0) Catalog Number
Pitch
SS302 SH302 SS192 SS142 SH192 SS142-1 SH142 SH142-1 SS102 SS82 SH102 SH82
30 30 19 14 19 14 14 14 10 8 10 8
50 RPM† 100 RPM† 200 RPM† HP Torque HP Torque HP Torque .002 4.9 .004 .005 12.4 .01 .01 24.7 .02 .02 49.4 .05 .03 74.1 .05 .04 98.8 .08 .06 148 .12 .10 247 .20 .14 346 .27 .26 642 .50 .34 840 .67 .64 1581 1.3
300 RPM† 600 RPM† HP Torque HP Torque
4.9 .008 4.9 .013 12.4 .02 12.4 .03 24.7 .04 24.7 .06 61.8 .09 55.6 .14 61.8 .10 61.8 .16 98.8 .16 98.8 .23 148 .23 142 .34 247 .39 241 .58 334 .52 321 .78 618 .99 611 1.5 828 1.3 803 2.0 1606 2.5 1544 3.7
5.4 12.4 24.7 57.6 65.9 94.7 140 239 321 618 824 1524
.025 .06 .12 .26 .31 .45 .66 1.1 1.5 2.8 3.8 7.1
5.1 12.4 24.7 53.5 63.8 92.6 136 226 309 576 782 1462
900 RPM† 1200 RPM† 1800 RPM† HP Torque HP Torque HP Torque .037 5.1 .05 5.1 .07 4.8 .09 12.4 .12 12.4 .18 12.4 .18 24.7 .24 24.7 .35 24.0 .39 53.5 .51 52.5 .76 52.2 .46 63.1 .60 61.8 .88 60.4 .67 92.0 .88 90.6 1.3 89.2 .98 135 1.3 134 1.9 130 1.7 233 2.2 226 3.2 220 2.2 302 2.9 299 4.3 295 4.2 576 5.5 566 8.0 549 5.6 769 7.3 751 10.7 734 10.5 1441 13.7 1410 20.0 1373
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating. *Torque (Lb. Ins.) Output Rating HP (Input) Note: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. Use for interpolation purposes only. **Ratings reflect Gear and Pinion sets. †Pinion RPM
P-1930-BG
04/10
Boston Gear 800-825-6544
83
Notes
C
84
Boston Gear 800-825-6544
P-1930-BG
04/10
Worms & Worm Gears Section Contents
CATALOG NUMBERS / DIMENSIONS .............................................................................................. 86-95 SELECTION PROCEDURE ....................................................................................................................... 96 HORSEPOWER & TORQUE RATINGS............................................................................................... 97-98 CENTER DISTANCES & RATIOS AVAILABLE ........................................................................................ 98 STOCK ALTERED / CUSTOM WORM AND WORM GEARS ............................................................... 3-5 WORM/WORM GEAR ENGINEERING INFORMATION................................................................ 310-311
D
P-1930-BG
04/10
Boston Gear 800-825-6544
85
Worms & Worm Gears 48 Diametral Pitch (Bronze Worm Gears, Steel Worms – Unhardened & Hardened, Acetal Worm Gears & Worms) Pressure Angle – Single thread 14-1/2° – Double thread 20° – Quad thread 25° RATIO = Gear Teeth ÷ Worm Threads All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
48 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315
HUB PROJ.
FACE
HUB DIA.
BORE
*
PITCH DIA.
20 30 40 50
.417 .625 .187 .833 1.042
.34 .44
20
.417 .125 .125 .625 .188 .188 .833 .250 .188 1.042 .250
.34
.19
.44
.25
.50
.25
.50
.25
.417 .34 .625 .44 .833 .1875 .50 1.042 .50 1.250 .62 1.667 .62 .250 2.083 .69
.19
30 40 50
STANDARD TOLERANCES DIMENSION Bronze and Steel BORE Acetal Acetal with Brass Insert
TOLERANCE All
±.0005
All
+.001 –.002
All
+.001 –.000
20 30 40 50 60 80 100
FACE = .156" *CENTER LINE WORM TO FLUSH END = .078"
WORM GEARS
.50
.19 .25
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code ACETAL**
QUAD Thread Catalog Item Number Code
GP1018 54106 – GP1019 54107 – GP1020 54108 – GP1021 54109 – ACETAL WITH BRASS INSERTS**
– – – –
– – – –
– – – –
GP1018-1/8 54118 GP1019-1/8 54119 GP1019-3/16 54120 GP1020-3/16 54121 GP1020-1/4 54122 GP1021-3/16 54123 GP1021-1/4 54124 BRONZE
– – – – – – –
– – – – – – –
– – – – – – –
– – – – – – –
D1118 D1119 D1120 D1121 D1124 D1122 D1123
13488 13490 13492 13494 13500 13496 13498
Q1318 Q1319 Q1320 Q1321 Q1324 Q1322 Q1323
13440 13442 13444 13446 13452 13448 13450
.25
.31
B
B
A
B
G1018 G1019 G1020 G1021 G1024 G1022 G1023
13564 13566 13568 13570 13572 13574 13576
D WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
SINGLE .0654"
DOUBLE .1309"
QUAD .2618"
3°35´
7°7´
14°2´
FACE
PITCH DIA.
BORE
REFERENCE PAGES
HUB PROJ. HUB DIA.
48
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH Hub
SINGLE Thread Catalog Item Number Code ACETAL
DOUBLE Thread Catalog Item Number Code
QUAD Thread Catalog Item Number Code
Pitch Dia. Face
Bore
Dia.
Proj.
.333
.562
.187
.26
.19
LSHP 54141 – UNHARDENED – STEEL
.333
.562
.1875
.26
.19
LSH-1 12920 DSH-1 HARDENED – STEEL
12928
QSH-1
12934
.333
.562
.1875
.26
.19
HLSH-1 GLSH-1
13052 13036
HQSH-1 GQSH-1
13062 13042
13026 12952
HDSH-1 GDSH-1
–
–
–
All Steel worms have .0625 drilled hole in hub. Hxxx worms have polished threads. Gxxx worms have ground and polished threads.
Alterations — 314 Lubrication — 314 Materials — 315
86
Boston Gear 800-825-6544
P-1930-BG
04/10
Worms & Worm Gears 32 Diametral Pitch (Bronze Worm Gears, Steel Worms – Unhardened & Hardened, Acetal Worm Gears & Worms) Pressure Angle – Single thread 14-1/2° – Double thread 20° – Quad thread 25° RATIO = Gear Teeth ÷ Worm Threads All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
32 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315 20 30 40 50
.625 .187 .938 1.250 .250 1.562
20
.625
30
.938
40
1.250
50
1.562
20 30 40 50 60 80 96 100
.188 .250 .188 .250 .250 .313 .250 .3125
FACE = .219" *CENTER LINE WORM TO FLUSH END = .109"
WORM GEARS
.50 .63 .63 .63
.25 .31
.50
.25
.63
.25
.63
.31
.63
.31
GP1026 54110 – GP1027 54111 – B GP1028 54112 – GP1029 54113 – ACETAL WITH BRASS INSERTS**
– – – –
– – – –
– – – –
GP1026-3/16 54125 GP1026-1/4 54126 GP1027-3/16 54127 GP1027-1/4 54128 GP1028-1/4 54129 GP1028-5/16 54130 GP1029-1/4 54131 GP1029-5/16 54132 BRONZE
– – – – – – – –
– – – – – – – –
– – – – – – – –
– – – – – – – –
D1126 D1127 D1128 D1129 D1132 D1130 – D1133
13502 13504 13506 13508 13514 13510 – 13516
Q1326 Q1327 Q1328 Q1329 Q1332 Q1330 Q1331 –
13454 13456 13458 13460 13466 13462 13464 –
B
.625 .50 .1875 .938 .62 1.250 .62 1.562 .250 .62 1.875 .69 2.500 3.000 .3125 .69 3.125
SINGLE Thread DOUBLE Thread QUAD Thread Catalog Item Catalog Item Catalog Item Number Code Number Code Number Code ACETAL**
.25 A .31
.31
D
G1026 G1027 G1028 G1029 G1032 G1030 G1031 G1033
13578 13580 13582 13584 13586 13588 13590 13592
HUB PROJ.
FACE
HUB DIA.
BORE
*
PITCH DIA.
STANDARD TOLERANCES DIMENSION Bronze and Steel BORE Acetal Acetal with Brass Insert
TOLERANCE All
±.0005
All
+.001 –.002
All
+.001 –.000
D WORM LEAD and LEAD ANGLE
32
LEAD LEAD ANGLE
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH Hub
SINGLE Thread Catalog Item Number Code ACETAL
DOUBLE Thread Catalog Item Number Code
Bore
Dia.
Proj.
.438
.641
.187
.32
.19
LTHBP 54142 – UNHARDENED – STEEL
–
.438
.688
.1875
.32
.19
LTHB-1 12922 DTH-1 HARDENED – STEEL
12930
QTH-1
12936
.438
.688
.2187
.32
.19
HLTH-1 GLTH-1
13054 13038
HQTH-1 GQTH-1
13064 13044
04/10
QUAD .3927"
4°5´
8°8´
15°57´
FACE
HDTH-1 GDTH-1
–
–
All Steel worms have .0625 drilled hole in hub. Hxxx worms have polished threads. Gxxx worms have ground and polished threads. **These are in effect Helical Gears with a Helix Angle compatible with the worms. When in mesh they operate as a worm pair at right angles. Face Width is 3/16".
P-1930-BG
DOUBLE .1963"
QUAD Thread Catalog Item Number Code
Pitch Dia. Face
13028 12954
SINGLE .0982"
PITCH DIA.
BORE
HUB PROJ. HUB DIA.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
Boston Gear 800-825-6544
87
Worms & Worm Gears 24 Diametral Pitch (Bronze Worm Gears, Steel Worms – Unhardened & Hardened, Minlon® Worm Gears – Nylon Worms) Pressure Angle – Single thread 14-1/2° – Double thread 20° – Quad thread 25° RATIO = Gear Teeth ÷ Worm Threads All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
24 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315
HUB DIA.
BORE
*
PITCH DIA.
20 30 40 50
20 30 40 50
STANDARD TOLERANCES DIMENSION Bronze and Steel BORE Minlon/Nylon Minlon/Nylon w/Brass Insert
D
SINGLE Thread DOUBLE Thread QUAD Thread Catalog Item Catalog Item Catalog Item Number Code Number Code Number Code MINLON**
HUB PROJ.
FACE
FACE = .250" *CENTER LINE WORM TO FLUSH END = .125"
WORM GEARS
TOLERANCE All
±.0005
All
+.001 –.002
All
+.001 –.000
20 30 40 50 60 72 80 96 100
.833 .187 .63 1.250 1.667 .3125 .75 2.083 .1875 .250 .63 .1875 1.250 .250 .250 1.667 .3125 .75 .250 2.083 .3125
.31
GP1034 54114 – GP1035 54115 – B GP1036 54116 – GP1037 54117 – MINLON WITH BRASS INSERTS**
– – – –
– – – –
– – – –
GP1034-3/16 54133 GP1034-1/4 54134 GP1035-3/16 54135 GP1035-1/4 54136 GP1036-1/4 54137 GP1036-5/16 54138 GP1037-1/4 54139 GP1037-5/16 54140 BRONZE
– – – – – – – –
– – – – – – – –
– – – – – – – –
– – – – – – – –
D1134 D1135 D1136 D1137 D1140 D1138 D1141 D1139 D1149
13518 13520 13522 13524 13530 13526 13532 13528 13534
Q1334 Q1335 Q1336 Q1337 Q1340 Q1338 Q1341 – –
13470 13472 13474 13476 13482 13478 13484 – –
.833
.833 1.250 1.667 2.083 2.500 3.000 3.333 4.000 4.167
.31
.1875 .62
.31
.250
.62
.31
.75
.31
.88
.38
.88
.38
.3125
.375
B
A B C D
G1034 G1035 G1036 G1037 G1040 G1038 G1041 G1039 G1049
13594 13596 13598 13600 13602 13604 13606 13608 13610
WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
SINGLE .1309"
DOUBLE .2618"
QUAD .5236"
4°46´
9°28´
18°26´
24
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH DIA.
BORE
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
88
Boston Gear 800-825-6544
Hub
HUB PROJ.
Pitch Dia. Face
Bore
Dia.
Proj.
HUB DIA.
.500
.643
.187
.38
.25
.500
.812
.1875
.38
.25
.500
.812
.25
.38
.25
SINGLE Thread Catalog Item Number Code NYLON
DOUBLE Thread Catalog Item Number Code
LUHBP 54143 – UNHARDENED – STEEL
QUAD Thread Catalog Item Number Code
–
–
–
LUHB 12924 DUH HARDENED – STEEL
12932
QUH
12938
HLUH GLUH
13056 13040
HQUH GQUH
13066 13060
13030 12956
HDUH GDUH
All Steel worms have .0938 drilled hole in hub. Hxxx worms have polished threads. Gxxx worms have ground and polished threads. MINLON® is a registered trademark of E.I. DuPont. ** These are in effect Helical Gears with a Helix Angle compatible with the worms. When in mesh they operate as a worm pair at right angles.
P-1930-BG
04/10
Worms & Worm Gears 16 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened) Pressure Angle – Single thread 14-1/2° – Double thread 14-1/2° – Quad thread 25° RATIO = Gear Teeth ÷ Worm Threads All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
16
FACE = .313" *CENTER LINE WORM TO FLUSH END = .156"
WORM GEARS
DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code
QUAD Thread Catalog Item Number Code
BRONZE 20 30 40 50 60 80 100
1.250 .250 1.875 .3125 2.500 3.125 3.750 .375 5.000 6.250
20 30 40 50 60 80 100
1.250 .250 1.875 .3125 2.500 3.125 3.750 .375 5.000 6.250
.62
.31
.75
.38
.88
.44
1.00
.50
.62
.31
.75
.38
.88
.44
1.00
.50
A B C D
A B C
CG1042 CG1043 CG1044 CG1045 CG1048 CG1046 CG1047
HUB PROJ.
FACE
G1042 13612 G1043 13614 G1044 13616 G1045 13618 G1048 13620 G1046 13622 G1047 13624 CAST IRON 63506 63507 63508 63509 63510 63511 63512
D1142 D1143 D1144 D1145 D1148 – –
13700 13702 13704 13706 13708 – –
Q1342 Q1343 Q1344 Q1345 Q1348 Q1346 –
13536 13538 13540 13542 13544 13546 –
CD1142 CD1143 CD1144 CD1145 CD1148 – –
63513 63514 63515 63516 63517 – –
CQ1342 CQ1343 CQ1344 CQ1345 CQ1348 CQ1346 –
63518 63519 63520 63521 63522 63523 –
BORE
*
HUB DIA.
PITCH DIA.
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
16
SINGLE .1963"
DOUBLE .3927"
QUAD .7854"
5°43´
11°19´
21°48´
D
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH Hub
Pitch Dia. Face
Bore
Dia.
Proj.
.625
1.00
.250
.44
.25
.625
1.00
.3125
.44
.25
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code UNHARDENED – STEEL
QUAD Thread Catalog Item Number Code
LVHB-1 12926 DVH-1 HARDENED – STEEL
12862
QVH-1
12940
HLVH-1 GLVH-1
13004 12950
HQVH-1 GQVH-1
13058 13046
13032 12958
HDVH-1 GDVH-1
FACE
PITCH DIA.
BORE
HUB PROJ. HUB DIA.
All worms have .0938 drilled hole in hub. Hxxx worms have polished threads. Gxxx worms have ground and polished threads.
REFERENCE PAGES Alterations — 314 Lubrication — 314 Materials — 315
P-1930-BG
04/10
Boston Gear 800-825-6544
89
Worms & Worm Gears 12 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened)
RATIO = Gear Teeth ÷ Worm Threads RH = RIGHT HAND — LH = LEFT HAND All others stocked RIGHT HAND ONLY.
Pressure Angle – 14-1/2°
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
12
FACE = .500" *CENTER LINE WORM TO FLUSH END = .250"
WORM GEARS
DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315
SINGLE Thread Catalog Item Number Code
DOUBLE Thread Catalog Item Number Code
QUAD Thread Catalog Item Number Code
– – DB1400 – DB1401A – DB1402A – DB1403A – DB1260A – –
– – 13714 – 13716 – 13718 – 13720 – 13722 – –
QB1212† QB1216† DB1600 – DB1601A – DB1602A – DB1603A – QB1260A – –
13762 13764 13766 – 13768 – 13770 – 13772 – 13774 – –
13260 13262
D1600
13352
BRONZE 12 16 20
1.000 .5625 1.00 1.333 .6875 1.25 1.667 .500 1.25 .500 2.500 1.19 .750 .625 3.333 1.44 .750 .625 4.167 1.44 .750 .625 5.000 1.69 .750 6.667 .625 1.94 8.333 .750 1.94
.62 .62 .50 .62 .62 .62 .62 .62 .62 .62 .62 .75 .75
20
1.667 .500
.50
30
2.500
30 40 50
HUB PROJ.
FACE
60 80 100
HUB DIA.
BORE
*
PITCH DIA.
1.25
.500
DIMENSION BORE All
WORM LEAD and LEAD ANGLE
D
LEAD LEAD ANGLE
.62 1.44
SINGLE .2618"
DOUBLE .5236"
QUAD 1.0472"
4°46´
9°28´
18°26´
.62
.625 50
4.167
B
.62 1.44
.750 .625
60
5.000
80
.750 .625 6.667 .750 8.333 .750
100
A
.62
.750
TOLERANCE ±.0005
C
.62
.625 3.333
STANDARD TOLERANCES
B
1.19 .750
40
A
.62 1.69
.75
1.94
.75
1.94
.75
C
– – – – GB1050A 13626 GB1051 13628 – – GB1052A 13630 – – GB1053A 13632 – – GB1260A 13634 – – GB1054 13636 GB1055 13638 CAST IRON G1050ARH G1050ALH G1051RH G1051LH
13110 D1400RH 13112 D1400LH 13114 – 13116 D1401ARH – – D1401ALH G1052ARH 13118 – G1052ALH 13120 D1402ARH – – D1402ALH G1053ARH 13122 – G1053ALH 13124 D1403ARH – – D1403ALH G1260RH 13126 – G1260LH 13128 – – D1260A G1054 13130 – – – D1404 G1055 13134 –
12
–
–
–
13264 13266
D1601A
13354
–
–
–
13268 13270
D1602A
13356
–
–
–
13272 13274
D1603A
13358
–
–
–
13276 – 13278 –
Q1260A – – –
13360 – – –
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH DIA.
BORE
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96
90
Boston Gear 800-825-6544
HUB PROJ. HUB DIA.
Hub
Pitch Dia. Face
Bore
Dia.
Proj.
1.125
.625
–
–
1.000 1.625
.625 .500
– –
– –
1.125
.500
.75
.38
1.125
.625
–
–
1.000 1.625
.625 .500
– –
– –
1.125
.500
–
–
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code UNHARDENED – STEEL D1407KRH‡ D1407KLH‡ – – L1407‡ L1056‡ 12900 – GH1056RH 12884 DH1407RH GH1056LH 12886 DH1407LH HARDENED – STEEL –
– – HL1056‡ H1056RH‡ H1056LH‡
–
H1407RH‡ H1407LH‡ – HL1407‡ 13006 – 12962 – 12960 – –
QUAD Thread Catalog Item Number Code
12806 12808 12912 – 12838 12840
D1607KRH‡ 12822 D1607KLH‡ 12824 – – – – DH1607 12854 – –
12980 12982 13018 – – –
H1607‡ – – – – –
12996 – – – – –
†.750" Face, Center Line Worm to Flush End = .375" ‡Furnished with .125" Keyway. Hardened Worms have ground and polished threads. P-1930-BG
04/10
Worms & Worm Gears 10 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened)
RATIO = Gear Teeth ÷ Worm Threads RH = RIGHT HAND — LH = LEFT HAND All others stocked RIGHT HAND ONLY.
Pressure Angle – 14-1/2°
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
10 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315 16 20 30 40 50 60 80 100
1.600 .750 .500 2.000 .875 .625 3.000 .875 .625 4.000 .875 .750 5.000 .875 .750 6.000 .875 8.000 .750 10.000 .750
1.50 1.25 1.62
.75 A
.62
1.69
.62
1.69
.62
1.94
.75
1.94
.75
1.94 2.00
.75 .75
B
C
.500 1.25 20
2.000
.62
A
.875 1.62
3.000
.62
–
.62
B
.875 1.69
5.000
.75 .875 1.94
60 80 100
6.000
.750 1.94
.875 .750 8.000 .875 .750 10.000 .875
1.94 1.94 1.94 1.94 1.94
– G1063RH G1063LH
.750 1.94 50
–
–
G1062ARH 13144 G1062ALH 13146
.625 1.69 4.000
BRONZE – – GB1060A 13640 – – GB1061A 13648 – – GB1062A 13642 – – GB1063 13644 – – GB1064 13646 – – GB1067 13650 GB1065 13652 CAST IRON G1060ARH 13136 G1060ALH 13138 –
.875 1.69
40
SINGLE Thread Catalog Item Number Code
G1061ARH 13142 G1061ALH 13140
.625 1.69 30
FACE = .625" *CENTER LINE WORM TO FLUSH END = .312"
WORM GEARS
– .75 .75 C .75
G1064RH G1064LH – G1067 – G1065 –
10
– 13148 13150 –
DOUBLE Thread Catalog Item Number Code
QUAD Thread Catalog Item Number Code
– – DB1410 – DB1411 – DB1412 – DB1413A – DB1414A – –
QB1016† – DB1610 – DB1611 – DB1612 – DB1613A – – – –
– – 13728 – 13736 – 13730 – 13732 – 13734 – –
–
–
D1410RH D1410LH
13282 13284
– D1411RH D1411LH
– 13286 13288
–
–
D1412RH D1412LH
13290 13292
–
–
D1413ARH 13294 D1413ALH 13296
13152 – 13154 – D1414A 13156 – – D1080A 13158 – – D1415A
– D1610 – D1611 – D1612
13780 – 13782 – 13788 – 13784 – 13786 – – – –
–
HUB PROJ.
FACE
HUB DIA.
BORE
*
PITCH DIA.
13366 – 13368 –
STANDARD TOLERANCES
13370
–
–
D1613A
13372
–
–
–
13298 – 13300 – 13302
D1614A – Q1080A – –
13374 – 13376 – –
WORMS FOR ABOVE GEARS
DIMENSION BORE All
TOLERANCE ±.0005
WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
SINGLE .3142"
DOUBLE .6283"
QUAD 1.2566"
4°34´
9°5´
17°45´
D
DIAMETRAL PITCH Hub
Pitch Dia. Face
Bore
Dia.
Proj.
1.375
.750
–
–
2.000
.750 .625
– –
– –
–
–
1.375
.625
1.250
.97
.50
1.375
.750
–
–
1.250 2.000
.750 .625
– –
– –
1.375
.625
–
–
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code UNHARDENED – STEEL – – D1418KRH‡ – – D1418KLH‡ – – L1418‡ 12902 – L1066‡ G1066KRH‡ 12864 – G1066KLH‡ 12866 GH1066RH 12888 DH1418RH GH1066LH 12890 DH1418LH HARDENED STEEL – – – HL1066‡ H1066RH‡ H1066LH‡
†.875" Face, Center Line Worm to Flush End = .438" ‡Furnished with 3/16" Keyway. Hardened Worms have ground and polished threads.
P-1930-BG
04/10
– H1418RH‡ – H1418LH‡ – HL1418‡ 13008 – 12966 – 12964
12810 12812 12914 – –
QUAD Thread Catalog Item Number Code
FACE D1618KRH‡ 12826 D1618KLH‡ 12828 – – – – – DH1618 –
12856 –
12986 12984 13020 –
H1618‡ – – –
12998 – – –
–
BORE
HUB DIA.
–
12842 12844
–
PITCH DIA.
HUB PROJ.
–
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96
Boston Gear 800-825-6544
91
Worms & Worm Gears 8 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened)
RATIO = Gear Teeth ÷ Worm Threads RH = RIGHT HAND — LH = LEFT HAND All others stocked RIGHT HAND ONLY.
Pressure Angle – 14-1/2°
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
8 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315 8 12 16 20 30 40 48 50 60 80 100
HUB PROJ.
FACE
HUB DIA.
BORE
*
1.000 .500 1.500 .750 2.000 1.000 .750 2.500 1.000 .750 3.750 1.000 5.000 1.000 6.000 1.000 6.250 1.000 7.500 1.000 10.000 1.250 12.500 1.250
PITCH DIA.
1.12 .88 1.50 .88 2.00 .88 1.75 .75 1.75 .75 1.69 .75 1.69 .75 2.19 .75 2.38 .88 2.31 .88 2.44 .88 2.75 .88 3.00 1.00
.750 1.75 20
TOLERANCE ±.0005
.75
48
6.000 1.000 2.38
.88
50
6.250 1.000 2.31
.88
96 100
–
.75 .75
80
BRONZE – – – – – – GB1070 13654 – – GB1071 13656 – – GB1072A 13658 GB1073 13660 GB850RH 13662 GB860 13664 GB1074A 13666 GB8100 13668 CAST IRON G1070RH 13160 G1070LH 13162 –
G1071RH G1071LH
.75
5.000 1.000 1.69
7.500 1.000 1.000 10.000 1.250 12.000 1.250 12.500 1.250
SINGLE Thread Catalog Item Number Code
.75
40
60
C D C
3.750 1.000 1.69
DIMENSION BORE All
B
A
.750 1.69
STANDARD TOLERANCES
A
2.500 1.000 1.75
30
FACE = .750" *CENTER LINE WORM TO FLUSH END = .375"
WORM GEARS
B
2.44 .88 2.69 .88 2.69 .88 3.00 1.00 2.69 1.00
C D D C C
13164 13166
–
–
G1072ARH G1072ALH G1073RH G1073LH G850RH G850LH G860 – G1074ARH G1075 G8100A
13168 13170 13174 13172 13176 13178 13180 – 13182 13186 13188
DOUBLE Thread Catalog Item Number Code
QUAD Thread Catalog Item Number Code
– – – – DB1420A – DB1421A DB1422 – DB1423A DB860A – –
– – – – 13740 – 13742 13744 – 13746 13748 – –
QB808† QB812† QB816† – DB1620A – DB1621A DB1622 – DB1623A – – –
13790 13792 13794 – 13796 – 13798 13800 – 13802 – – –
–
–
–
–
D1620A
13380
–
–
D1621A
13382
D1622A
13384
D1420ARH 13304 D1420ALH 13306 –
–
D1421ARH D1421ALH D1422ARH D1422ALH
13308 13310 13312 13314
–
–
–
–
D1423A
13316
D1623A
13386
D860A D1424A – – –
13320 13322 – – –
Q860A D1624A – – –
13388 13390 – – –
WORM LEAD and LEAD ANGLE
D
LEAD LEAD ANGLE
SINGLE .3927"
DOUBLE .7854"
1.5708"
QUAD
4°46´
9°28´
18°26´
8
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH DIA.
BORE
HUB PROJ.
Hub
Pitch Dia. Face
Bore
Dia.
Proj.
1.750
.875
–
–
2.500
.875 .750
– –
– –
.750
–
–
.750
1.18
.62
1.750
.875
–
–
1.500 2.500
.875 .750
– –
– –
1.750
.750
–
–
HUB DIA. 1.500
1.750
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code UNHARDENED – STEEL
QUAD Thread Catalog Item Number Code
D1427KRH‡ 12814 D1427KLH‡ 12816 – – L1427‡ 12916 12904 – – L1076‡ G1076KRH‡ 12868 – – G1076KLH‡ 12870 GH1076RH 12892 DH1427RH 12846 GH1076LH 12894 DH1427LH 12848 HARDENED STEEL
D1627KRH‡ 12830 D1627KLH‡ 12832 – – – –
–
– – HL1076‡ H1076RH‡ H1076LH‡
–
H1427RH‡ H1427LH‡ – HL1427‡ 13010 – 12970 – 12968 –
12990 12988 13022 – –
–
–
DH1627
12858
H1627‡ – – –
13000 – – –
–
–
†1.000" Face, Center Line Worm to Flush End = .500" ‡Furnished with .188" Keyway. Hardened Worms have ground and polished threads.
92
Boston Gear 800-825-6544
P-1930-BG
04/10
Worms & Worm Gears 6 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened) Pressure Angle – 14-1/2° ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
6 DIAMETRAL PITCH Style No. Hub See of Pitch Page Teeth Dia. Bore Dia. Proj. 315 16 20 24 30 36 40 48 50 60 72
2.667 1.250 .750 3.333 1.000 1.250 .750 4.000 1.250 .875 5.000 1.250 6.000 1.000 1.000 6.667 1.250 8.000 1.250 8.333 1.250 10.000 1.250 12.000 1.250
2.38 1.00 2.00 2.00 .88 2.00 1.94
.88
2.19
.88
2.50
.88
2.44
.88
2.75 2.69 3.00 3.00
1.00 1.00 1.00 1.25
1.81
.88
A
B
C
.750 20
3.333
SINGLE Thread Catalog Item Number Code BRONZE – – GB1077A 13670 – – – – GB1080A 13672 – – GB1081 13674 – – GB1082 13676 GB1078 13678 – – GB1083 13680 GB1079 13612 GB1087 13684 GB1084 13686 CAST IRON G1077RH 13190 G1077LH 13192
1.000
–
4.000
1.94
.88
1.250
– B
.875 30
5.000
2.19
.88
G1081RH G1081LH
1.250 6.000 1.000 2.50
40
6.667
G1082RH G1082LH G1078RH G1078LH
.88
1.000 2.44
.88
1.250 48
1.250 1.250 1.250 1.250 1.375 1.375
– 13202 13204 13206 13208
–
8.000 1.250 2.75 1.00 8.333 10.000 12.000 13.333 16.000 16.667
– 13198 13200
–
36
50 60 72 80 96 100
–
G1080ARH 13194 G1080ALH 13196
.750 24
FACE = 1.000" *CENTER LINE WORM TO FLUSH END = .500"
WORM GEARS
2.69 2.69 2.94 3.00 3.00 3.00
B
1.00 1.00 1.00 1.00 1.00 1.00
C
D
G1083RH G1083LH G1079RH G1087ARH G1084ARH G1088ARH G1085ARH G1089ARH
–
DOUBLE Thread Catalog Item Number Code
QUAD Thread Catalog Item Number Code
– – DB620A – – DB1430A – DB1431A – – DB1432A – – – –
– – 13752 – – 13754 – 13756 – – 13758 – – – –
QB616** – – QB620A – DB1630A – DB1631A – – DB1632A – – – –
13804 – – 13806 – 13808 – 13810 – – 13812 – – – –
–
–
–
–
D620ARH D620ALH
13326 13328
Q620A
13394
–
–
–
–
D1630A
13396
–
–
D1430ARH 13330 D1430ALH 13332 –
D1431ARH 13334 D1431ALH 13336
D1631A
13398
–
–
–
–
–
–
–
–
D1632A
13400
D1432ARH 13338 D1432ALH 13340
13212 – 13210 13214 D1433 13218 D660 13220 D1434 13224 – 13226 – 13228 –
6
–
–
–
–
13342 13344 13346 – – –
D1633 Q660 D1634 – – –
13402 13404 13406 – – –
Pitch Dia. Face
Hub Dia.
Proj.
2.500 1.000
–
–
1.000 .875
– –
– –
.875
–
–
.875
1.56
.75
2.500 1.000
–
–
2.000 3.500
1.000 .875
– –
– –
2.500
.875
–
–
3.500 2.000
Bore
2.500
P-1930-BG
04/10
SINGLE Thread DOUBLE Thread Catalog Item Catalog Item Number Code Number Code UNHARDENED – STEEL
QUAD Thread Catalog Item Number Code
D1438KRH† 12818 D1438KLH† 12820 – – L1438 12918 12906 – – L1086‡ G1086KRH‡ 12872 – – G1086KLH‡ 12874 GH1086RH 12896 DH1438RH 12850 GH1086LH 12898 DH1438LH 12852 HARDENED STEEL
D1638KRH† 12834 D1638KLH† 12836 – – – –
–
– – HL1086‡ H1086RH‡ H1086LH‡
–
H1438RH† H1438LH ‡ – HL1438† 13012 – 12974 – 12972 –
12994 12992 13024 – –
–
–
DH1638
12860
H1638 † – – –
13002 – – –
–
–
HUB DIA.
BORE
*
PITCH DIA.
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
SINGLE .5236"
DOUBLE 1.0472"
QUAD 2.0944"
4°46´
9°28´
18°26´
FACE
PITCH DIA.
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
HUB PROJ.
FACE
BORE
D
HUB PROJ. HUB DIA.
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96 RATIO = Gear Teeth ÷ Worm Threads RH = RIGHT HAND — LH = LEFT HAND All others stocked RIGHT HAND ONLY. **1.250" Face, Center Line Worm to Flush End = .625" ‡Furnished with .188" Keyway. †Furnished with .250" Keyway. Hardened Worms have ground and polished threads.
Boston Gear 800-825-6544
93
Worms & Worm Gears 4 Diametral Pitch (Bronze & Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened)
RATIO = Gear Teeth ÷ Worm Threads RH = RIGHT HAND — LH = LEFT HAND All others stocked RIGHT HAND ONLY.
Pressure Angle – 14-1/2°
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
HUB PROJ.
FACE
*CENTER LINE WORM TO FLUSH END = .750" WORM DIAMETRAL PITCH GEARS Style No. Hub See SINGLE Thread of Pitch Page Catalog Item Teeth Dia. Bore Dia. Proj. 315 Number Code
4
BORE
*
HUB DIA.
PITCH DIA.
STANDARD TOLERANCES DIMENSION BORE All
TOLERANCE ±.0005
FACE = 1.500"
20 24
BRONZE 5.000 1.000 2.50 1.25 B 6.000 CAST IRON
20
5.000 1.000 2.50
24
6.000
32
8.000
1.25 40 48 64
B
1.250 3.00
10.000 12.000 1.500 3.50 16.000
D
GB1100 GB1101
13688 13690
G1100RH G1100LH G1101RH G1101LH G1102RH G1102LH G1103 G1104 G1105
13230 13232 13234 13236 13238 13240 13242 13244 13246
WORM LEAD and LEAD ANGLE
D
LEAD LEAD ANGLE
.7854 4°46´
4 FACE KEYWAY PITCH DIA.
Pitch Dia. Face
BORE 3.000
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96
94
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Boston Gear 800-825-6544
SINGLE Thread Catalog Item Bore Dia. Proj. Number* Code UNHARDENED – STEEL Hub
G1106KRH G1106KLH 4.500 1.250 – – L1106 HARDENED STEEL 3.500 1.250
3.500 1.250 3.000 4.500 1.250 5.750
–
–
–
–
–
–
H1106 HL1106 HP1106
12876 12878 12908 12976 13014 13034
*All worms furnished with .313 keyway. Hardened Worms have ground and polished threads.
P-1930-BG
04/10
Worms & Worm Gears 3 Diametral Pitch (Cast Iron Worm Gears, Steel Worms – Unhardened & Hardened) Pressure Angle – 14-1/2° RATIO = Gear Teeth ÷ Worm Threads All Worm and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE *CENTER LINE WORM TO FLUSH END = 1.000" WORM DIAMETRAL PITCH GEARS Style No. Hub See SINGLE Thread of Pitch Page Catalog Item Teeth Dia. Bore Dia. Proj. 315 Number Code 18 6.000 1.000 3.00 1.50 G1110 13248 24 8.000 G1111 13250 B 30 10.000 3.50 G1112 13252 36 12.000 1.500 1.50 G1113 13254 48 16.000 C G1114 13256 4.00 54 18.000 G1115 13258 D
3
FACE = 2.000"
WORMS FOR ABOVE GEARS † DIAMETRAL PITCH SINGLE Thread Hub Pitch Catalog Item Dia. Face Bore Dia. Proj. Number Code UNHARDENED – STEEL
4.000
BORE
*
4.000 G1116KRH 1.500 – – 5.500 L1116 HARDENED STEEL
12880 12910
4.000 1.500 5.500
12978 13016
–
–
H1116 HL1116
HUB DIA.
PITCH DIA.
STANDARD TOLERANCES DIMENSION BORE All
3
4.000
HUB PROJ.
FACE
TOLERANCE ±.0005
WORM LEAD and LEAD ANGLE LEAD LEAD ANGLE
1.0472" 4°46'
D
FACE
†All worms furnished with .375" keyway. Hardened Worms have ground and polished threads.
KEYWAY PITCH DIA.
BORE
REFERENCE PAGES Alterations — 314 Horsepower Ratings — 97, 98 Lubrication — 314 Materials — 315 Selection Procedure — 96
P-1930-BG
04/10
Boston Gear 800-825-6544
95
Worms & Worm Gears Boston worms and worm gears provide an effective answer for such power transmission applications as high-ratio speed reduction, limited space, right-angle shafts and non-intersecting shafts. When properly applied, they are the smoothest and quietest form of gearing. Steel worms and cast iron or bronze worm gears are available in single, double or quadruple threads, 48 to 3 diametral pitch. Acetal worms and worm gears are available in single thread, 48 to 24 diametral pitch.
Selection Procedure Approximate input horsepower and output torque ratings for Boston stock worm and worm gear combinations from 12 to 3 DP are listed on Pages 97, 98. These ratings are for hardened, ground and polished worms operating with bronze worm gears. For other combinations multiply the listed ratings by the following percentages: Hardened, ground and polished steel worms with cast iron gears 50%. Unhardened steel worms with cast iron gears 25%.
1. Determine service factor. a. Using Application Classification Chart I, pages 323, 324, determine service factor or b. With knowledge of operating conditions and load classification, select service factor from Table 1. 2. Determine Design Horsepower. Design HP = Application Load x Service Factor (Table 1) 3. Select worm gear set with horsepower capacity equal to [or greater than] design horsepower determined in Step 2.
These ratings are listed at selected worm speeds. Ratings for intermediate speeds can be interpolated from the values indicated. These ratings are based on gears operating with a Service Factor of 1.0, properly mounted in accordance with good design practice and continuously lubricated with a sufficient supply of oil.
D
TABLE 1 Service Factor 0.8 1.0 1.25 1.50 1.75 2.0
Operating Conditions Uniform—not more than 15 minutes in 2 hours. Moderate Shock—not more than 15 minutes in 2 hours. Uniform—not more than 10 hours per day. Moderate Shock—not more than 10 hours per day. Uniform—more than 10 hours per day. Heavy Shock—not more than 15 minutes in 2 hours. Moderate Shock—more than 10 hours per day. Heavy Shock—not more than 10 hours per day. Heavy Shock—more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher service factors. Consultation with factory is recommended in these applications.
96
Boston Gear 800-825-6544
P-1930-BG
04/10
Worms & Worm Gears Steel-Hardened, Ground & Polished Worms Bronze Worm Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) Worm RPM Center Ratio Distance 3 1.000 1.500 1.167 1.425 4 1.750 2.333 1.333 1.625 5 2.000 2.667 6 3.000 1.750 2.125 7.5 2.625 3.500 1.333 1.625 2.000 2.167 10 2.667 2.625 3.250 4.333 12 3.000 2.583 12.5 3.125 3.875 1.750 2.125 15 2.625 3.000 3.500 18 5.000† 1.333 1.625 2.000 2.167 20 2.667 2.625 3.250 4.000 4.333 3.000 24 6.000† 4.500 2.583 3.125 25 3.875 5.167 1.750 2.125 2.625 3.000 30 3.500 3.625 4.500 7.000† 32 5.500 4.000 36 8.000†
Input HP .52 1.19 .78 1.11 1.77 3.01 .68 1.03 1.73 3.92 3.82 1.04 1.59 2.65 4.80 .44 .67 1.05 1.39 2.01 2.11 3.54 6.43 2.39 1.72 2.61 4.40 .64 .98 1.54 2.04 2.94 2.27 .28 .42 .65 .83 1.22 1.25 1.98 2.92 3.77 1.42 3.23 3.41 .99 1.50 2.39 2.27 .40 .59 .90 1.15 1.69 1.74 2.75 4.23 2.13 1.95 3.87
1800 Output Torque 50 109 99 142 216 392 109 165 264 639 746 247 381 607 1174 130 196 318 441 616 672 1082 2094 882 683 1042 1681 284 436 699 966 1355 1308 140 217 343 483 665 742 1191 1667 2318 933 2218 2336 726 1112 1794 1738 294 452 725 1008 1386 1544 2489 3326 1955 1915 3990
Input HP .27 .66 .40 .61 .98 1.84 .34 .57 .96 2.40 2.34 .53 .87 1.47 2.94 .23 .38 .63 .71 1.26 1.16 1.96 3.94 1.50 .87 1.44 2.44 .33 .55 .92 1.03 1.84 1.38 .15 .25 .41 .43 .80 .71 1.18 1.99 2.36 .93 1.81 2.32 .52 .85 1.43 1.42 .21 .35 .57 .60 1.12 .98 1.65 2.53 1.46 1.29 1.33
600 Output Torque 72 183 143 223 361 689 158 257 441 1124 1317 355 599 1016 2064 189 305 525 641 1071 1061 1806 3685 1537 985 1641 2810 410 678 1150 1402 2364 2373 210 336 567 693 1156 1156 1974 3025 4034 1613 4020 4235 1048 1730 2962 3028 410 693 1197 1450 2426 2395 4128 6002 3546 3366 4130
Input HP .06 .15 .08 .13 .22 .45 .07 .12 .22 .59 .57 .11 .19 .33 .72 .05 .09 .15 .15 .32 .25 .44 .96 .38 .18 .31 .55 .07 .13 .22 .22 .47 .41 .04 .06 .10 .09 .22 .16 .28 .64 .60 .26 .53 .75 .11 .19 .34 .36 .05 .09 .13 .13 .31 .22 .39 .76 .47 .36 .68
100 Output Torque 83 227 166 267 454 933 180 309 551 1512 1777 411 714 1276 2789 208 366 649 756 1450 1267 2270 4980 2042 1134 1961 3466 463 804 1428 1617 3120 4198 227 391 706 794 1550 1374 2433 4663 5420 2163 7109 6504 1197 2048 3671 4018 473 831 1286 1663 3233 2836 5105 10683 5445 4470 12816
Worm Cat. No. H1607 H1627 H1607 H1618 H1627 H1638 H1607 H1618 H1627 H1638 H1638 H1607 H1618 H1627 H1638 H1407 H1418 H1427 H1607 H1438 H1618 H1627 H1638 H1438 H1607 H1618 H1627 H1407 H1418 H1427 H1607 H1438 H1116 H1056 H1066 H1076 H1407 H1086 H1418 H1427 H1106 H1438 H1086 H1116 H1106 H1407 H1418 H1427 H1438 H1056 H1066 H1076 H1407 H1086 H1418 H1427 H1116 H1106 H1086 H1116
Gear Cat. No. QB1212 QB812 QB1216 QB1016 QB816 QB616 DB1600 DB1610 DB1620A QB620A DB1630A DB1601A DB1611 DB1621A DB1631A DB1400 DB1410 DB1420A DB1602A DB620A DB1612 DB1622 DB1632A DB1430A DB1603A DB1613A DB1623A DB1401A DB1411 DB1421A QB1260A DB1431A G1110† GB1050A GB1060A GB1070 DB1402A GB1077A DB1412 DB1422 GB1100 DB1432A GB1080A G1111† GB1101 DB1403A DB1413A DB1423A D1433† GB1051 GB1061A GB1071 DB1260A GB1081A DB1414A DB860A G1112† G1102† GB1082A G1113†
DP 12 8 12 10 8 6 12 10 8 6 6 12 10 8 6 12 10 8 12 6 10 8 6 6 12 10 8 12 10 8 12 6 3 12 10 8 12 6 10 8 4 6 6 3 4 12 10 8 6 12 10 8 12 6 10 8 3 4 6 3
D
*Torque in Lb. Ins. †Cast Iron Gear Rating with Hardened Worm shown. All Worm and Worm Gear Ratings are based on a Hardened Steel Worm used with a Bronze Worm Gear. 1. For a Hardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .50. 2. For an Unhardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .25.
P-1930-BG
04/10
Boston Gear 800-825-6544
97
Worms & Worm Gears Steel-Hardened, Ground & Polished Worms Bronze Worm Gears Approximate Horsepower and Torque* Ratings For Class I Service (Service Factor = 1.0) Worm RPM Center Ratio Distance 2.167 40 2.625 3.250 4.333 3.750 48 5.000 10.000† 2.583 50 3.125 3.875 5.167 54 11.000† 3.000 60 3.625 4.500 6.000 72 7.000 3.833 80 4.625 5.750 4.667 100 5.625 7.000
Input HP .48 .72 1.12 2.11 1.26 2.37 4.06 .55 .83 1.30 2.43 4.34 .60 .91 1.42 2.66 2.79 .64 .96 1.49 .60 .90 1.40
1800 Output Torque 490 742 1190 2310 1614 3110 5320 700 1068 1716 3327 5985 924 1408 2269 4370 5521 1288 1961 3165 1505 2310 3711
Input HP .26 .43 .71 1.39 .79 1.56 1.68 .30 .51 .82 1.60 1.79 .33 .54 .89 1.75 1.84 .35 .57 .94 .33 .54 .88
600 Output Torque 672 1134 1974 4034 2622 5445 6608 998 1733 2836 5777 7434 1323 2142 3718 7625 9605 1849 3042 5210 2206 3571 6092
Input HP .06 .11 .18 .38 .20 .43 .72 .07 .12 .21 .44 .77 .08 .13 .23 .49 .51 .08 .14 .24 .08 .13 .22
100 Output Torque 782 1361 2420 5345 3267 7260 17088 1134 1954 3498 7563 19224 1664 2571 4538 10210 12705 2118 3630 6555 2458 4223 7563
Worm Cat. No. H1056 H1066 H1076 H1086 H1076 H1086 H1116 H1056 H1066 H1076 H1086 H1116 H1056 H1066 H1076 H1086 H1086 H1056 H1066 H1076 H1056 H1066 H1076
Gear Cat. No. GB1052A GB1062A GB1072A GB1078 GB1073 GB1083 G1114† GB1053A GB1063 GB850 GB1079 G1115† GB1260A GB1064 GB860 GB1087 GB1084 GB1054 GB1067 GB1074A GB1055 GB1065 GB8100
DP 12 10 8 6 8 6 3 12 10 8 6 3 12 10 8 6 6 12 10 8 12 10 8
*Torque in Lb. Ins. †Cast Iron Gear Rating with Hardened Worm shown. All Worm and Worm Gear Ratings are based on a Hardened Steel Worm used with a Bronze Worm Gear. 1. For a Hardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .50. 2. For an Unhardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .25. 3. For an Unhardened Steel Worm used with a Bronze Gear, multiply the listed Rating by .35.
CENTER DISTANCES AND RATIOS AVAILABLE WITH STOCK WORM GEARING Worm Thread Center No. of Distance Teeth Single Double Quad (inches) Pitch in Gear Ratio
D
.375 .479 .531 .583 .666 .688 .688 .792 .844 .875 .938 1.000 1.000 1.083 1.156 1.208 1.250 1.292 1.333 1.469 1.500 1.562 1.625 1.719 1.750 1.750
48 48 32 48 24 48 32 48 32 24 16 48 32 24 32 48 16 24 12 32 24 16 10 32 24 12
20 30 20 40 20 50 30 60 40 30 20 80 50 40 60 100 30 50 20 80 60 40 20 96 72 30
20 30 20 40 20 50 30 60 40 30 20 80 50 40 60 100 30 50 20 80 60 40 20 96 72 30
10 15 10 20 10 25 15 30 20 15 10 40 25 20 30 50 15 25 10 40 30 20 10 48 36 15
5 7.5 5 10 5 12.5 7.5 15 10 7.5 5 20 12.5 10 15 25 7.5 12.5 5 20 15 10 5 24 18 7.5
Worm Thread Center No. of Distance Teeth Single Double Quad (inches) Pitch in Gear Ratio
1.781 1.875 1.917 2.000 2.125 2.167 2.188 2.250 2.333 2.583 2.625 2.625 2.667 2.812 3.000 3.000 3.125 3.250 3.438 3.500 3.625 3.750 3.833 3.875 4.000 4.000
32 16 24 8 10 12 16 24 24 12 10 8 6 16 12 6 10 8 16 6 10 8 12 8 6 4
100 50 80 20 30 40 60 96 100 50 40 30 20 80 60 24 50 40 100 30 60 48 80 50 36 20
100 50 80 20 30 40 60 96 100 50 40 30 20 80 60 24 50 40 100 30 60 48 80 50 36 20
50 25 40 10 15 20 30 48 50 25 20 15 10 – 30 12 25 20 – 15 30 – 40 25 – –
25 12.5 20 5 7.5 10 15 24 25 12.5 10 7.5 5 20 15 6 12.5 10 – 7.5 15 – – 12.5 – –
Worm Thread Center No. of Distance Teeth Single Double Quad (inches) Pitch in Gear Ratio
4.333 4.500 4.500 4.625 4.667 5.000 5.000 5.167 5.500 5.625 5.750 6.000 6.000 6.500 6.750 7.000 7.000 7.000 7.500 7.667 8.000 9.000 9.333 9.500 10.000 11.000
6 8 4 10 12 6 3 6 4 10 8 6 3 4 8 8 6 3 4 6 3 6 6 4 3 3
40 60 24 80 100 48 18 50 32 100 80 60 24 40 96 100 72 30 48 80 36 96 100 64 48 54
40 60 24 80 100 48 18 50 32 100 80 60 24 40 96 100 72 30 48 80 36 96 100 64 48 54
20 30 – 40 – – – 25 – 50 – 30 – – – – 36 – – – – – – – – –
10 15 – 20 – – – 12.5 – – – 15 – – – – 18 – – – – – – – – –
Example: Given a center distance of 2.625", Table lists Worm and Worm Gear Ratios available: 10 Pitch, 40 tooth, single = 40 to 1 8 Pitch, 30 tooth, single = 30 to 1 10 Pitch, 40 tooth, double = 20 to 1 8 Pitch, 30 tooth, double = 15 to 1 10 Pitch, 40 tooth, quad = 10 to 1 8 Pitch, 30 tooth, quad = 7.5 to 1
98
Boston Gear 800-825-6544
P-1930-BG
04/10
Shaft Accessories
SECTION CONTENTS SHAFT COUPLINGS Catalog Number Selections/Dimensions................................................................................100-106 Engineering .......................................................................................................................................312 UNIVERSAL JOINTS General Description..........................................................................................................................107 Catalog Number Selections/Dimensions................................................................................108-113 Engineering .......................................................................................................................................312 SHAFT COLLARS Set Screw Collars .............................................................................................................................114 Clamping Collars.......................................................................................................................115-117 THRUST WASHERS Catalog Number Selections/Dimensions .......................................................................................118 BUSHINGS Catalog Number Selections/Dimensions .......................................................................................119 PULLEYS (ROUND)
E
Catalog Number Selections/Dimensions .......................................................................................120 MINIATURE TIMING BELTS AND PULLEYS General Description/Engineering....................................................................................................121 Timing Belt Selections/Dimensions ........................................................................................124, 130 Timing Belt Pulleys Selections/Dimensions ...........................................................................125-129 131-134
P-1930-BG
04/10
Boston Gear 800-825-6544
99
Shaft Couplings FC Series Insert (3-Jaw) Type PRECISION MACHINED BORED OR SOLID HUBS THREE TYPES OF INSERTS for different service requirements NO LUBRICATION NEEDED BORE SIZES FROM 3/8" TO 2-1/8" COMPLETE WITH KEYWAY AND SETSCREW
Reference Pages Alignment—312 Keyways and Setscrews—313
Coupling Inserts OIL-IMPREGNATED BOST-BRONZ— Recommended for high torque loads, particularly at slower speeds. OIL-RESISTANT SYNTHETIC RUBBER—Recommended where quietness is desired, particularly at motor speeds. POLYURETHANE—Recommended where moderate to heavy shock loads are encountered.
Load Data HORSEPOWER AND TORQUE RATING AT RECOMMENDED SPEEDS FOR INSERTS INDICATED
Coupling Size FC12 FC15 FC20 FC25 FC30 FC38 FC45 FC12 FC15 FC20 FC25 FC30 FC38 FC45
E
FC12 FC15 FC20 FC25 FC30 FC38 FC45
Shaft Diameter Range
Maximum Horsepower Rating At RPM Of *
50 100 300 690 870 1150 XFCBB BOST-BRONZ INSERTS 3-8–5/8 .16 .32 .95 2.2 2.8 3.6 1/2–7/8 .40 .79 2.4 5.5 6.9 9.1 1/2-1-1/8 .79 1.6 4.8 10.9 13.8 18.2 3/4–1-3/8 1.4 2.9 8.6 19.7 24.8 — 1–1-5/8 2.5 5.1 15.2 35.0 — — 1-1/4–1-7/8 5.6 11.1 33.3 — — — 1-3/4–2-1/8 8.7 17.5 — — — — XFCR RUBBER INSERTS 3/8–5/8 — .10 .31 .71 .90 1.2 1/2–7/8 — .20 .60 1.4 1.7 2.3 1/2–1-1/8 — .40 1.2 2.7 3.5 4.6 3/4–1-3/8 — .71 2.1 4.9 6.2 8.2 1–1-5/8 — 1.3 3.8 8.8 11.0 14.6 1-1/4–1-7/8 — 2.5 7.6 17.5 22.1 29.2 1-3/4–2-1/8 — 4.4 13.3 30.7 38.7 51.1 XFCA POLYURETHANE INSERTS 3/8–5/8 .09 .19 .56 1.2 1.6 2.0 1/2–7/8 .18 .37 1.1 2.5 3.1 4.0 1/2–1-1/8 .35 .70 2.1 4.6 5.7 7.5 3/4–1-3/8 .62 1.2 3.7 8.1 10.1 13.1 1–1-5/8 1.1 2.2 6.5 14.4 17.9 23.3 1-1/4–1-7/8 2.2 4.3 12.9 28.4 35.3 45.8 1-3/4–2-1/8 3.7 7.5 22.4 49.2 61.0 79.0
1750 3450
Max. Torque (Lb. Ins.)
5.6 13.9 — — — — —
— — — — — — —
200 500 1000 1800 3200 7000 11000
1.8 3.5 6.9 12.5 22.2 44.4 77.7
3.6 56.8 13.7 24.6 43.8 — —
65 125 250 450 800 1600 2800
3.0 6.0 11.1 19.3 34.3 67.3 115.9
5.7 11.3 20.7 35.8 63.6 — —
125 250 470 845 1500 3000 5250
Selection Procedure 1. From Table select Service Factor. 2. Determine Design Load Design HP = Application HP x S.F. or Design Torque = Application Torque x S.F. 3. Select coupling size from Load Rating Table which has a rating equal to or greater than the design load.
COUPLING SERVICE FACTORS
Load Classification
Service Factor
Uniform Moderate Shock Heavy Shock
1.0 1.75 2.50
*For uniform load.
100
Boston Gear 800-825-6544
P-1930-BG
04/10
Shaft Couplings FC Series Bored and Solid Hubs Insert (3-Jaw) Type
KEYWAY
STANDARD TOLERANCES Dimensions Tolerance Bore
All
OVERALL LENGTH SETSCREW
O.D.
BORE
HUB DIA.
+.001 – .000 BORE LENGTH
HUB PROJ.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE To order complete coupling order two coupling halves and one coupling insert
Hub Coupling Bore Overall Bore O.D. Size Length+ Length++ Dia. Proj.
FC12
FC15
FC20
FC25
FC30
FC38
FC45
— 3/8 7/16 1/2 5/8 — 1/2 9/16 5/8 3/4 7/8 — 1/2 9/16 5/8 3/4 7/8 15/16 1 1-1/8 — 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 — 1 1-1/8 1-1/4 1-7/16 1-1/2 1-5/8 — 1-1/4 1-1/2 1-9/16 1-5/8 1-3/4 1-7/8 — 1-3/4 1-7/8 2 2-1/8
Coupling Halves Bost-Bronz Rubber Polyurethane Assembly Catalog Item Catalog Item Catalog Item Catalog Item Clearance Number Code Number Code Number Code Number Code
— 27/32
1-1/4
2-5/16
1
5/8
3-3/16
1-1/32 1-1/2
2-3/4
1-1/4
3/4
3-3/4
—
—
1-7/16
2
3-11/16 1-3/4 1-1/8
4-13/16
—
1-19/32 2-1/2
4-1/8
2-1/4 1-1/4
5-3/8
— 2-5/32
3
5-15/32 2-3/41-11/16
7
—
2-5/8
3-3/4
6-5/16
4-1/2
7-3/16
3-1/2 1-7/8
8-3/16
— 3
4
2-1/8
9-5/16
FC12 SOLID FC12-3/8 FC12-7/16 FC12-1/2 FC12-5/8 FC15 SOLID FC15-1/2 FC15-9/16 FC15-5/8 FC15-3/4 FC15-7/8 FC20 SOLID FC20-1/2 FC20-9/16 FC20-5/8 FC20-3/4 FC20-7/8 FC20-15/16 FC20-1 FC20-1-1/8 FC25 SOLID FC25-3/4 FC25-7/8 FC25-1 FC25-1-1/8 FC25-1-3/16 FC25-1-1/4 FC25-1-3/8 FC30 SOLID FC30-1 FC30-1-1/8 FC30-1-1/4 FC30-1-3/8 FC30-1-7/16 FC30-1-1/2 FC30-1-5/8 FC38 SOLID FC38-1-1/4 FC38-1-1/2 FC38-1-9/16 FC38-1-5/8 FC38-1-3/4 FC38-1-7/8 FC45 SOLID FC45-1-3/4 FC45-1-7/8 FC45-2 FC45-2-1/8
47448 08246 08248 08250 52405 47449 08252 61421 08254 08256 61422 47450 08258 66063 08260 08262 08264 08266 08268 52406 47451 08270 08272 08274 08276 08278 08280 52408 47452 08282 08284 08286 08288 08290 08292 52409 24650 08294 08296 08298 08300 08302 08304 24816 08306 08308 08310 08312
XFCBB12 08064 XFCR12 08078 XFCA12 08050
XFCBB15 08066 XFCR15 08080 XFCA15 08052
XFCBB20 08068 XFCR20 08082 XFCA20 08054
XFCBB25 08070 XFCR25 08084 XFCA25 08056
XFCBB50 08072 XFCR30 08080 XFCA30 08058
E XFCBB38 08074 XFCR38 08088 XFCA38 08060
XFCBB45 08076 XFCR45 08090 XFCA45 08062
+Length of hole in each half. ++Total length of coupling with jaws engaged full depth. †Total length of coupling with jaws completely disengaged for insert assembly. P-1930-BG
04/10
Boston Gear 800-825-6544
101
Shaft Couplings BF Series Bost-Flex® Spider Ring (3-Jaw) Type ECONOMICAL 3-JAW COUPLING SPIDER RING URETHANE INSERT absorbs shock and vibration. Provides through opening for close coupling of shafts. BORE SIZES FROM 3/8” TO 1-1/4” COMPLETE WITH KEYWAY AND SETSCREW.
OVERALL LENGTH
KEYWAY
STANDARD TOLERANCES Dimensions Bore
O.D.
Tolerance
All
HUB DIA.
BORE
+.001 – .000
Reference Pages
E
F
SETSCREW
Alignment—312 Keyways and Setscrews—313 ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE Includes two coupling halves and one coupling insert
Coupling Size
BF7
BF10
BF13
BF18
E
Bore A
B
3/8 1/2 1/2 1/2 1/2 5/8 3/4 5/8 5/8 3/4 3/4 3/4 3/4 3/4 7/8 1 7/8 7/8 1 1 1 1 1 1-1/8 1-1/4 1-1/8 1-1/8 1-1/4 1-1/4 1-1/4 3/8 1/2
Hub Diameter
7/8
F
Assembly Clearance
Approx. Weight (Oz.)
1/2
5/16
1-5/8
2
3/4
7/16
2-3/8
6.5
3
14
3-5/8
37
O.D.
Overall Length
E
1-7/32
1-5/16
1-1/4
1-19/32 1-15/16
1-5/8
1-31/32
2-1/4
2-23/32 2-15/16 1-1/8 11/16
2-7/16 15/16 9/16
Replacement Insert Item Code
Coupling Catalog Number
Item Code
BF7 3/8–3/8 BF7 3/8–1/2 BF7 1/2–1/2 BF10 1/2–1/2 BF10 1/2–5/8 BF10 1/2–3/4 BF10 5/8–5/8 BF10 5/8–3/4 BF10 3/4–3/4 BF13 3/4–3/4 BF13 3/4–7/8 BF13 3/4–1 BF13 7/8–7/8 BF13 7/8–1 BF13 1–1 BF18 1–1 BF18 1–1-1/8 BF18 1–1-1/4 BF18 1-1/8–1-18 BF18 1-1/8–1-1/4 BF18 1-1/4–1-1/4
11730 11734 11732 11736 11742 11744 11738 11746 11740 11748 11754 11756 11750 11758 11752 11760 11766 11768 11762 11770 11764
11722
11724
11726
11728
HORSEPOWER AND TORQUE RATINGS
Selection Procedure
Size
For Service Factors and Procedures, refer to FC Couplings (Page 100).
BF 7 BF 10 BF13 BF 18
102
Boston Gear 800-825-6544
100 .044 .11 .25 .48
300 .13 .34 .76 1.40
Revolutions per Minute 690 870 1150 .31 .39 .51 .78 1.00 1.30 1.70 2.20 2.90 3.30 4.10 5.50
1750 .78 2.00 4.40 8.30
3450 1.5 3.9 8.8 16.4
Max Torque (Lb. Ins.) 28 72 160 300
P-1930-BG
04/10
Shaft Couplings BG Series Shear Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Coupling Size
Bore A 1/8
BG47 3/16 1/4 3/16 BG11-1
1/4 5/16 1/4
BG11-2 5/16 3/8 5/16 BG11-3 3/8 1/2 3/8 BG11-4 1/2 5/8 1/2 BG11-5
BG11-6
BG11-7
5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1
B 1/8 3/16 1/4 3/16 1/4 1/4 3.16 1/4 1/4 5/16 5/16 1/4 5/16 3/8 5/16 3/8 3/8 5/16 3/8 1/2 3/8 1/2 1/2 3/8 1/2 5/8 1/2 5/8 5/8 1/2 5/8 3/4 5/8 3/4 1/2 5/8 3/4 3/4 3/4 5/8 7/8 1
Hub O.D. Diameter
Overall Length
F
3/16
7/16
9/16
13/16
5/8
13/16
1-3/8 11/32
3/4
7/8
1
1-1/4
1-3/4 13/32
2-1/8 15/32
1
1-3/8
2-1/4 17/32
1-1/8
1-5/8
2-1/2 19/32
1-3/8 1-13/16 2-11/16 11/16
1-1/2
2
2-7/8
3/4
Catalog Number BG47-2-2 BG47-2-3 BG47-2-4 BG47-3-3 BG47-3-4 BG47-4-4 BG11-1-3-3 BG11-1-3-4 BG11-1-4-4 BG11-1-4-5 BG11-1-5-5 BG11-2-4-4 BG11-2-4-5 BG11-2-4-6 BG11-2-5-5 BG11-2-5-6 BG11-2-6-6 BG11-3-5-5 BG11-3-5-6 BG11-3-5-8 BG11-3-6-6 BG11-3-6-8 BG11-3-8-8 BG11-4-6-6 BG11-4-6-8 BG11-4-6-10 BG11-4-8-8 BG11-4-8-10 BG11-4-10-10 BG11-5-8-8 BG11-5-8-10 BG11-5-8-12 BG11-5-10-10 BG11-5-12-12 BG11-6-8-8 BG11-6-10-10 BG11-6-10-12 BG11-6-12-12 BG11-7-8-12 BG11-7-10-10 BG11-7-12-14 BG11-7-16-16
Item Code 49887 49888 49889 49890 47891 47892 49893 49394 49395 49896 49897 49898 49899 49900 49901 49902 49903 49904 49905 49906 49907 49908 49909 49910 49911 49912 49913 49914 49915 49916 49917 49918 49919 49920 49921 49923 49924 49925 49926 49927 49930 49931
OVERALL LENGTH
BORE O.D. “B”
SETSCREW
BORE “A”
HUB DIA.
F
METAL HUBS JOINED PERMANENTLY BONDED ELASTOMER require no lubrication. Flexible in any direction— accommodates misalignment up to 1/32” parallel, 2” angular. HIGH TORSIONAL DEFLECTION isolates low frequency vibration. BORE SIZES FROM 1/8” TO 1” COMPLETE WITH STANDARD SETSCREWS (Not installed).
Load Data HORSEPOWER AND TORQUE RATINGS
Size BG-47 BG11-1 BG11-2 BG11-3 BG11-4 BG11-5 BG11-6 BG11-7
100 .001 .004 .007 .014 .019 .029 .043 .057
P-1930-BG
04/10
300 .003 .011 .021 .043 .057 .086 .129 .171
Revolutions per Minute 690 870 1150 1750 .008 .010 .013 .020 .025 .031 .041 .062 .049 .062 .082 .125 .099 .124 .164 .250 .131 .166 .219 .333 .197 .248 .328 .500 .296 .313 .493 .750 .394 .497 .657 1.000
Max Torque 3450 (Lb. Ins.) .039 .72 .123 2.25 .246 4.50 .493 9.00 .657 12.00 .985 18.00 1.478 27.00 1.971 36.00
STANDARD TOLERANCES Dimensions Bore
1/8 – 3/8 1/2 – 5/8 3/4 – 1
Tolerance +.001 – .000 +.0015 – .000 +.002 – .000
Reference Pages Alignment—312 Keyways and Setscrews—313
Boston Gear 800-825-6544
103
E
Shaft Couplings SCC Series Clamping Type LOW CARBON STEEL COUPLINGS with a black oxide finish. BORE SIZES FROM 1/4” to 2”
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore A 1/4 3/8 1/2
OUTSIDE DIA. LENGTH
5/8 BORE (A)
BORE (B)
3/4 CLAMP SCREW
7/8 1 1-1/8 1-1/4
STANDARD TOLERANCES Dimensions Bore
All
Tolerance +.001 – .000
1-3/8 1-1/2 1-3/4 2
B 1/4 1/4 3/8 3/8 1/2 1/2 5/8 1/2 5/8 3/4 5/8 7/8 1 1 1-1/8 1 1-1/4 1 1-3/8 1 1-1/2 1-3/4 2
O.D.
Length
13/16
1-1/4
Clamp Screws (4) 4-40
1-1/16
1-5/8
6-32
1-1/4
1-7/8
8-32
1-1/2
2-1/4
10-32
1-3/4
2-5/8
1/4-28
1-7/8
2-7/8
1/4-28
2
3
1/4-28
2-1/8
3-1/4
1/4-28
2-1/4
3-3/8
1/4-28
2-3/8
3-5/8
1/4-28
2-1/2
3-3/4
1/4-28
3 3-1/4
4-1/2 4-7/8
516-24 5/16-24
Catalog Number
Item Code
SCC1/4 x 1/4 SCC3/8 x 1/4 SCC3/8 x 3/8 SCC1/2 x 3/8 SCC1/2 x 1/2 SCC5/8 x 1/2 SCC5/8 x 5/8 SCC3/4 x 1/2 SCC3/4 x 5/8 SCC3/4 x 3/4 SCC7/8 x 5/8 SCC7/8 x 7/8 SCC1 x 1 SCC1-1/8 x 1 SCC1-1/8 x 1-1/8 SCC1-1/4 x 1 SCC1-1/4 x 1-1/4 SCC1-3/8 x 1 SCC1-3/8 x 1-3/8 SCC1-1/2 x 1 SCC1-1/2 x 1-1/2 SCC1-3/4 x 1-3/4 SCC2 x 2
49289 49290 49291 49292 49293 49294 49295 49296 49297 49298 49299 49300 49302 49303 49304 49305 49306 49307 49308 49309 49310 49312 49314
Load Data
E
Capacity is based on a standard steel, one piece coupling mounted with recommended screw torque on a dry shaft. Capacities shown are for general guidance only. In applications involving control of torque loads, capacity should be determined experimentally on actual parts involved.
104
Boston Gear 800-825-6544
TORQUE CAPACITY
Bore 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2
Torque Capacity (Lb. Ins.) 72 192 480 1200 1500 1680 1920 2200 3000 3500 4000 5400 6000
4-40 6-32 8-32 10-32
Recommended Screw Torque (Lb. Ins.) 20 30 55 90
1/4-28
220
5/16-24
435
Screw Size
P-1930-BG
04/10
Shaft Couplings FA Series Multi-Jaw Type UNTREATED STEEL COUPLINGS for use in light duty applications, require no lubrication. BORE SIZES FROM 3/16” to 1/2” COMPLETE WITH STANDARD SETWCREWS OVERALL LENGTH
SETSCREW STANDARD TOLERANCES Dimensions
HUB DIA.
BORE
O.D.
Bore
Tolerance
All
± .0005
Reference Pages BORE LENGTH
Alignment—312 Keyways and Setscrews—313
HUB PROJ. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Coupling Bore Size 3/16 7/32 1/4 5/16 3/8 7/16 1/2
FA5 FA75 FA10
Bore Assembly Length++ Clearance‡
O.D.
Length†
1/2
1-1/8
1/2
3/4
1-1/2
1
2
Hub Teeth
Dia.
Proj.
1-9/32
7/16
7/16
10
5/8
1-3/4
11/16
33/64
10
7/8
2-9/32
15/16
3/4
12
Steel Catalog Number FA5 3/16-3/16 FA5 7/32-7/32 FA5 1/4-1/4 FA75 5/16-5/16 FA75 3/8-3/8 FA10 7/16-7/16 FA10 1/2-1/2
Item Code 07900 07902 07904 07910 07912 07908 07906
†Total length of coupling with jaws engaged full depth. ++Length of hole in each half. ‡Approximate total length of coupling with jaws completely disengaged.
CR Series Rigid (One Piece) Type BORE SIZES FROM 1/4” TO 1-1/4” COMPLETE WITH STANDARD SETSCREWS ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
O.D.
1/4 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/4
1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4
Overall Length 3/4 1 1 1-1/2 2 2 2 3 4
A 3/16 1/4 1/4 3/8 1/2 1/2 1/2 3/4 1
Catalog Number CR4 CR5 CR6 CR8 CR10 CR12 CR14 CR16 CR20
Item Code 34200 34202 34204 34206 34208 34210 34212 34214 34216
E SETSCREW A
O.D.
STANDARD TOLERANCES Dimensions Tolerance Bore
P-1930-BG
All
04/10
+.001 – .000
Reference Pages Keyways and Setscrews—313
A
BORE
OVERALL LENGTH
Boston Gear 800-825-6544
105
Shaft Couplings FCP Series Sleeve Type SPLINED HUBS AND URETHANE SLEEVE accommodate misalignment to 5°. SLEEVE STOCK available for producing special lengths. NO LUBRICATION NEEDED COMPLETE WITH SETSCREWS
L A 2
Materials Urethane Sleeves Delrin Hubs Aluminum Alloy Inserts
SETSCREW
A
1 16
BORE
O.D.
H
STANDARD TOLERANCES Dimensions Bore
All
INSERT
E
Tolerance
HUB
+.001 – .000
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Complete Coupling Bore O.D. A E H L Setscrew Catalog Item Number Code .125 4 – 40 FCP21 – 1/8 54893 .1875 37/64 7/32 7/16 9/16 15/16 6 – 32 FCP21 – 3/16 54894 .250 FCP21 – 1/4 54895 .3125 8 – 32 FCP23 – 5/16 54899 .375 1-5/64 3/8 11/16 1 1-9/16 10 – 32 FCP23 – 3/8 54900 .4375 FCP23 – 7/16 54901 1/4 – 20 FCP23 – 1/2 54902 .500
X5R21 – 16
54913
X5R23 – 32
54915
ORDER BY CATALOG NUMBER OR ITEM CODE
HORSEPOWER RATINGS (MAXIMUM) AT 1750 RPM
Size FCP21 FCP23
106
Sleeve Only Catalog Item Number Code
Sleeve Stock
Load Data
E
Insert and Hub Assembly Catalog Item Number Code XFCP21 – 1/8 54903 XFCP21 – 3/16 54904 XFCP21 – 1/4 54905 XFCP23 – 5/16 54909 XFCP23 – 3/8 54910 XFCP23 – 7/16 54911 XFCP23 – 1/2 54912
Boston Gear 800-825-6544
Horsepower 1/20 1/2
O.D.
Length (Inches)
1/2 1
12
Catalog Number 5R21 – 16S 5R23 – 32S
Item Code 54916 54918
P-1930-BG
04/10
Universal Joints J/JS Series Pin and Block Type; Steel and Stainless Steel Boston Gear precision machined J and JS Series Universal Joints are designed for connecting shafts at angles up to 30 degrees and speeds up to 2000 RPM. All sizes are stocked with both solid and bored hubs. Joints J100 and J100B and larger are equipped with self-closing, ball valve oilers, creating an oil reservoir to provide enclosed lubrication. The self-locking assembly ring on joints with 7/8” and larger hub diameter, fits into recess provided in center bearing block and snaps around groove in small bearing pin — assuring locking of entire assembly allowing for quick and easy disassembly and reassembly. Joints with 3/4” and smaller hub diameters are locked by riveting the small bearing pin. Joint covers (boots) keep dirt and moisture out and lubricants in.
Selection
Example:
Torque ratings may be calculated from data in tables. The tables indicate the Rated Static Torque (Lb. Ins.) of alloy and stainless steel joints and Speed-Angle factors suggested for various operating conditions.
A pair of universal joints are desired to transmit 1/2 HP from one shaft running at 500 RPM to another located at an angle of 10 degrees (from a straight line).
The approximate service torque rating of a particular joint is obtained by dividing the Rated Static Torque by the appropriate Speed-Angle factor.
The joints will be connected by an intermediate shaft and arranged to operate at equal angles of 5 degrees. A Speed-Angle factor of 9 is indicated in the table for an operating angle of 5 degrees and a speed of 500 RPM.
Selecting a universal to satisfy a specified torque requirement is also made convenient with the data provided.
Torque Load = 63025 x HP= 63025 x 1/2 = 63 Lb. Ins. RPM 500
The designated torque load should be multiplied by the appropriate Speed-Angle factor to obtain an equivalent static torque load.
J100 size alloy steel or JS175 size stainless steel universals would be suggested for this application.
A universal with a rated static torque equal to or greater than the calculated torque load would then be selected. SPEED-ANGLE FACTORS
Speed In RPM 2000 1800 1600 1400 1200 1000 900 800 700 600 500 400 300 200 100 50 25 10 0
Operating Angle – Degrees (Deviation From Straight Line) 0 21 19 17 15 13 11 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.5 1.3 1.1 1.0
1/2 22 20 17.8 15.8 13.6 11.6 10.6 9.4 8.4 7.4 6.4 5.2 4.2 3.2 2.2 1.6 1.3 1.2 1.1
1 23.2 21.0 18.8 16.6 14.4 12.2 11.0 10.0 8.8 7.8 6.6 5.6 4.4 3.4 2.2 1.7 1.4 1.2 1.1
2 25.2 22.8 20.4 18.0 15.6 13.2 12.0 10.8 9.6 8.4 7.2 6.0 4.8 3.6 2.4 1.8 1.5 1.3 1.2
3 27.4 24.8 22.2 19.6 17.0 14.4 13.0 11.8 10.4 9.2 7.8 6.6 5.2 4.0 2.6 2.0 1.6 1.4 1.3
4 29.4 26.6 23.8 21.0 18.2 15.4 14.0 12.6 11.2 9.8 8.4 7.0 5.6 4.2 2.8 2.2 1.8 1.5 1.4
5 31.6 28.6 25.6 22.6 19.6 16.6 15.0 13.6 12.0 10.6 9.0 7.6 6.0 4.6 3.0 2.2 1.9 1.7 1.5
6 – 30.4 27.2 24.0 20.8 17.6 16.0 14.4 12.8 11.2 9.6 8.0 6.4 4.8 3.2 2.4 2.0 1.8 1.6
8 – – – 27 23.4 19.8 18.0 16.2 14.4 12.6 10.8 9.0 7.2 5.4 3.6 2.8 2.2 2.0 1.8
10 – – – – – 22 20 18 16 14 12 10 8.0 6.0 4.0 3.0 2.6 2.2 2.0
RATED STATIC TORQUE (LB. INS.)
12 – – – – – – 22 19.8 17.6 15.4 13.2 11.0 8.8 6.6 4.4 3.4 2.8 2.4 2.2
15 – – – – – – – – 20 17.6 15.0 12.6 10.0 7.6 5.0 3.8 3.2 2.8 2.6
20 – – – – – – – – – – 18 15 12 9.0 6.0 4.6 3.8 3.4 3.0
25 – – – – – – – – – – – 17.6 14.0 10.6 7.0 5.2 4.4 3.8 3.6
30 – – – – – – – – – – – – 16 12 8.0 6.0 5.0 4.4 4.0
E
STRAIGHT LINE
ALLOY STEEL UNIVERSAL JOINTS
Catalog Number Torque – Lb. Ins.
J37 20
J50 80
J62 166
J75 320
J87 370
J100 600
J112 670
J125 J150 1040 1680
J175 2500
J200 J250 J300 J400 4400 7000 11,000 26,400
STAINLESS STEEL UNIVERSAL JOINTS
Catalog Number Torque – Lb. Ins.
P-1930-BG
04/10
JS37 JS50 JS62 JS75 JS87 JS100 JS112 JS125 JS150 JS175 JS200 JS250 JS300 JS400 6 24 50 96 110 180 200 310 500 750 1320 1900 3100 7360
Boston Gear 800-825-6544
107
Universal Joints J/JS Series Bored and Solid Hubs Pin and Block Type; Steel and Stainless Steel STANDARD TOLERANCES Tolerance Steel Stainless Bore All ± .001 ±.001 Hub Dia. All +.000 –.003 ±.020 Bore Length All ±1/16 ±1/64 1-3/4 - 4-1/4 ±1/64 ±1/64 Overall 5 -10-5/8 ±1/32 ±1/32 Length
C
OVERALL LENGTH
Dimensions
HUB DIA.
C
BORE DIA.
A
BORE LENGTH OVERALL LENGTH 2
Reference Pages
B
OVERALL LENGTH 2
Lubrication—312 Mounting—312 ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE Steel Stainless Steel Catalog Item Catalog Item Bore Number Code Number Code Bore** Length* J37A-3/16 J37B J37 J50A-1/4 J50B J50 J62A-5/16 J62B J62 J75A-3/8 J75B J75 J87A-7/16 J87B J87 J100A-1/2 J100B J100 J112A-9/16 J112B J112 J125A-5/8 J125B J125 J150A-3/4 J150B J150 J175A-7/8 J175B J175 J200A-1 J200B J200 J250A-1-1/4 J250B J250 J300A-1/1/2 J300B J300 J400A-2 J400B J400
E
72467 08426 08400 72468 08428 08402 72469 08430 08404 72470 08432 08406 72471 08434 08408 72472 08436 08410 72473 72474 72475 72476 08438 08412 72477 08440 08414 72478 08442 08416 72479 08444 08418 72480 08446 08420 72481 08448 08422 72482 08450 08424
JS37B JS37 JS50B JS50 JS62B JS62 JS75B JS75 -JS87B JS87 JS100B JS100 JS112B JS112 -JS125B JS125 JS150B JS150 JS175B JS175 JS200B JS200 JS250B JS250 JS300B JS300 JS400B JS400
08472 08452 08474 08454 08476 08456 08478 08458 08480 08460 08482 08462 72483 72484 08484 08464 08486 08466 08488 08468 08490 08470 72485 72486 72487 72488 72489 72490
3/16 3/16 1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 9/16 9/16 5/8 5/8 3/4 3/4 7/8 7/8 1 1 1-1/4 1-1/4 1-1/2 1-1/2 2 2 -
11/16 11/16 3/4 3/4 13/16 13/16 31/32 31/32 1-1/32 1-1/32 1-3/16 1-3/16 1-7/32 1-7/32 1-1/4 1-1/4 1-11/32 1-11/32 1-9/16 1-9/16 1-5/8 1-5/8 2-3/32 2-3/32 2-27/32 2-27/32 3-1/8 3-1/8 -
Universal Joints Approx. Overall Hub Dia. Length Keyway Setscrew Weight Lbs. 3/8 3/8 3/8 1/2 1/2 1/2 5/8 5/8 5/8 3/4 3/4 3/4 7/8 7/8 7/8 1 1 1 1-1/8 1-1/8 1-1/8 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-3/4 1-3/4 1-3/4 2 2 2 2-1/2 2-1/2 2-1/2 3 3 3 4 4 4
1-3/4 1-3/4 1-3/4 2 2 2 2-1/4 2-1/4 2-1/4 2-11/16 2-11/16 2-11/16 3 3 3 3-3/8 3-3/8 3-3/8 3-1/2 3-1/2 3-1/2 3-3/4 3-3/4 3-3/4 4-1/4 4-1/4 4-1/4 5 5 5 5-7/16 5-7/16 5-7/16 7 7 7 9 9 9 10-5/8 10-5/8 10-5/8
3/32x3/64 3/32x3/64 3/32x3/64 1/8x1/16 1/8x1/16 3/16x3/32 3/16x3/32 3/16x3/32 1/4x1/8 1/4x1/8 3/8x3/16 1/2x1/4 -
2-56NC 4-40NC 10-32NF 10-32NF 10-32NF 1/4-20NC 1/4-20NC 5/16-18NC 5/16-18NC 5/16-18NC 3/8-16NC 3/8-16NC 1/2-13NC 1/2-13NC -
.04 .04 .05 .08 .08 .10 .14 .14 .18 .24 .24 .30 .31 .31 .45 .50 .50 .66 .69 .69 .88 .88 .88 1.15 1.44 1.44 1.81 2.31 2.31 2.86 3.31 3.31 4.06 6.81 6.81 8.25 12.5 12.5 15.25 25.8 25.8 31.3
A
Boot Kits† Catalog† Item B C Number Code
1-1/32 1-1/32 9/32
UB37
47602
1-1/4
1-5/16 11/32
UB50
47603
1-1/2
1-7/16 13/16
UB62
47604
1-3/4
1-9/16 9/16
UB75
47605
2
1-13/16 19/32
UB87
47606
UB100
47607
2-9/16 2-7/16 17/32
UB112
72491
2-7/8
2-3/4
1/2
UB125
47608
3-1/4
3-1/4
1/2
UB150
47609
3-5/8
3-3/4
5/8
UB175
47610
4-1/2
4-3/16
5/8
UB200
47611
5-1/2
4-7/8 1-1/16
UB250
47612
5-5/8 1-11/16 UB300
47613
6-5/8
47614
2-1/4
6
6-7/8
2-1/8
5/8
2
UB400
*Approximate Hub Projection †Each Kit contains (2) Boots and (4) Ties together with complete instructions for installation and lubrication. **Style A includes bore, keyway and setscrew. Style B includes bore only. Units without an A & B letter have a solid bore.
108
Boston Gear 800-825-6544
P-1930-BG
04/10
Universal Joints UJNS/UJNL Series BOS-Trong® Cast/Forged Steel A BOS-trong joint is composed of two yokes and a center kit. BOS-trong joints may be purchased assembled, or as separate yokes and center kits. Individually boxed. AVAILABLE IN TWO SIZES EQUIPPED WITH NEEDLE BEARINGS PRECISION MACHINED FOR LONG, SMOOTH OPERATION CONTINUOUS OR INTERMITTENT SERVICE HIGH CAPACITY WITH MINIMUM SWING DIAMETERS AVAILABLE WITH ROUND, SQUARE OR HEXAGON HOLES COMPLETE WITH KEYWAY AND SETSCREW REPLACEABLE CENTER KITS FITTING FOR LUBRICATION UJNS CAST STEEL UJNL FORGED STEEL
Selection Universal Joints are used in many different types of applications and under a wide variety of operating conditions. No convenient method can be presented for determining ratings for all possible circumstances. Performance will be affected by vibration, shock loading, high temperature, dusty environment, etc. The simplest solution to this problem is to provide approximate ratings of universal joints operating at various angles and speeds under normal service conditions. The suggested ratings are for general use in applications where two joints are arranged at equal angles with the bearing pins of the intermediate yokes in line with each other. Service torque ratings of the two sizes of BOS-trong Needle Bearing universals are listed in tables. Ratings for intermediate speeds and/or angles not shown may be found by interpolation.
Load Data APPROXIMATE TORQUE RATINGS (LB. INS.)
Speed RPM 1800 1200 900 600 300 200 100 50 25 10
UJNS Series Operating Angle*—Degrees (Deviation from Straight Line) Up to 5° 8° 12° 20° 30° 3° 610 515 440 — — — 700 590 505 435 — — 770 650 555 480 365 — 880 740 635 545 415 260 1110 935 800 690 525 325 1270 1070 915 790 600 370 1600 1350 1150 995 755 470 2020 1700 1450 1250 950 590 2540 2140 1830 1580 1200 745 3450 2900 2480 2140 1630 1010
NON-OPERATING FLEX-ANGLE—90°
P-1930-BG
04/10
UJNL Series Operating Angle†—Degrees (Deviation from Straight Line) Up to 5° 8° 12° 20° 30° 3° 845 710 610 — — — 965 815 695 600 — — 1060 895 765 660 500 — 1210 1020 875 755 575 355 1530 1290 1100 950 725 450 1750 1480 1260 1090 825 515 2210 1860 1590 1370 1040 645 2780 2350 2000 1730 1310 815 3500 2960 2530 2180 1650 1020 4760 4010 3430 2960 2250 1390 *Maximum Angles (Momentary)—45° †Maximum Angle (Momentary)—35°
Boston Gear 800-825-6544
109
E
Universal Joints UJNS/UJNL Series BOS-Trong® Cast/Forged Steel All joints have round holes with standard keyways and 3/8—16 hex socket setscrews. DIMENSION IN INCHES
SETSCREW
BORE
KEYWAY
HUB DIA.
OVERALL LENGTH
STANDARD TOLERANCES Dimensions
Tolerance
Bore
All
± .001
Hub Dia.
All
+ .000 – .002
Reference Pages Lubrication—312 Mounting—312 ORDERING INFORMATION Joints can also be ordered in various combinations of round, square or hex holes. To order the combination desired, specify “UJNS” or “UJNL” and hole size and type as listed in table of Yokes, Page 111. Use “S” for square and “H” for hexagon.
E
110
Boston Gear 800-825-6544
Overall Bore Length Hub-A Hub-B UJNS SERIES 5/8 3/4 13/16 5 5/8 7/8 15/16 1 1-1/8 3/4 13/16 7/8 5 3/4 15/16 1 1-1/8 13/16 7/8 5 13/16 15/16 1 1-1/8 7/8 15/16 5 7/8 1 1-1/8 15/16 5 15/16 1 1-1/8 1 5 1 1-1/8 5 1-1/8 1-1/8 UJNL SERIES 1 1-1/8 1-3/16 5-1/2 1 1-1/4 1-3/8 1-7/16 1-1/2 1-1/8 1-3/16 5-1/2 1-1/8 1-1/4 1-3/8 1-7/16 1-1/2 1-3/16 1-1/4 5-1/2 1-3/16 1-3/8 1-7/16 1-1/2 1-1/4 1-3/8 5-1/2 1-1/4 1-7/16 1-1/2 1-3/8 5-1/2 1-3/8 1-7/16 1-1/2 5-1/2 1-7/16 1-7/16 1-1/2 5-1/2 1-1/2 1-1/2
Hub Dia. App. Wt. Catalog Item Hub-A Hub-B (Lbs.) Number Code SWING DIAMETER—2-1/2” UJNS 10-10 17300 UJNS 10-12 17302 UJNS 10-13 17304 1-5/8 1-5/8 2 UJNS 10-14 17306 UJNS 10-15 17308 UJNS 10-16 17310 2-1/4 UJNS 10-18 17312 UJNS 12-12 17314 UJNS 12-13 17316 UJNS 12-14 17318 1-5/8 1-5/8 2 UJNS 12-15 17320 UJNS 12-16 17322 2-1/4 UJNS 12-18 17324 UJNS 13-13 17326 UJNS 13-14 17328 1-5/8 1-5/8 2 UJNS 13-15 17330 UJNS 13-16 17332 2-1/4 UJNS 13-18 17334 UJNS 14-14 17336 UJNS 14-15 17338 1-5/8 1-5/8 2 UJNS 14-16 17340 2-1/4 UJNS 14-18 17342 1-5/8 UJNS 15-15 17344 1-5/8 2 UJNS 15-16 17346 2-1/4 UJNS 15-18 17348 1-5/8 UJNS 16-16 17350 1-5/8 2 2-1/4 UJNS 16-18 17352 2-1/4 2-1/4 3 UJNS 18-18 17498 SWING DIAMETER—2-3/4” 2 UJNL 16-16 17354 UJNL 16-18 17356 UJNL 16-19 17358 2 2-1/4 3-3/4 UJNL 16-20 17360 UJNL 16-22 17362 UJNL 16-23 17364 UJNL 16-24 17366 UJNL 18-18 17368 UJNL 18-19 17370 2-1/4 2-1/4 3-3/4 UJNL 18-20 17372 UJNL 18-22 17374 UJNL 18-23 17376 UJNL 18-24 17378 2 UJNL 19-19 17380 UJNL 19-20 17382 2-1/4 2-1/4 3-1/4 UJNL 19-22 17384 UJNL 19-23 17386 UJNL 19-24 17388 2 UJNL 20-20 17390 UJNL 20-22 17392 2-1/4 2-1/4 3-1/4 UJNL 20-23 17394 UJNL 20-24 17396 UJNL 22-22 17398 2-1/4 2-1/4 3-1/4 UJNL 22-23 17400 UJNL 22-24 17402 2-1/4 2-1/4 3-1/4 UJNL 23-23 17404 UJNL 23-24 17406 2-1/4 2-1/4 3-1/4 UJNL 24-24 17408
P-1930-BG
04/10
Universal Joints UJS/UJL Series Cast/Forged Steel Yokes
STANDARD TOLERANCES DIMENSION
These yokes are for assembly with UJSC Center Kits. All yokes are furnished with 3/8–16 hex socket setscrew. UJS14H is 1/8 NPT straight.
TOLERANCE
Round Bore
Square Hexagon
+.000 – +.002 3/4 –13/16 +.000 – +.002 7/8 –1-1/2 +.001 +.003 +.002 +.004
KEYWAY
HUB BORE DIA.
DIM. ACROSS FLATS
A
ALL DIMENSIONS IN INCHES
A
Bore
UJS Series .625 .750 .813 2-1/2 .875 .938 1.000 1.125 UJL Series 1.000 1.125 1.1875 2-3/4 1.250 1.375 1.4375 1.500
Round Bores Approx. Setscrew Catalog Keyway Weight Location Number (Lbs.)
Hub Dia.
3/16x3/32 1.63
(1) 1/4x1/8 (1) (2)
2.25
2.00 1/4x1/8 (3)
(4) (4) (5) (4) (4) (4) (4)
1-1/4
(4)
1-1/2
3/4
1/4x1/8 2.25
(5)
1-1/4
5/16x5/32 3/8x3/16
(4)(6)
Square Bores Approx. Hub Catalog Item Weight Dia. Number Code (Lbs.)
Item Code
Dim. Across Flats
UJS10 UJS12 UJS13 UJS14 UJS15 UJS16 UJS18
17410 17412 17414 17416 17418 17420 17422
— — .750 1.63 .813 .875 (7) .938 2.25 1.000(7) 1.126
UJL16 UJL18 UJL19 UJL20 UJL22 UJL23 UJL24
17424 17426 17428 17430 17432 17434 17436
1.000 1.126
2.00 2.25
— 3/4
1-1/4
1-1/2 1-1/2
Hexagon Bores Catalog Number
Item Code
— UJS12S UJS13S UJS14S — UJS16S UJS18S
— 17438 17440 17442 — 17446 17448
— — — UJS14H (7) — — UJS18H
— — — 17454 — — 17456
UJL16S UJL18S
17450 17452
— UJL18H
— 17458
(1) Two keyways 180° apart, 3/16x3/32 and 1/4x1/8 (2) Two keyways 180° apart, 1/4x1/8 and 5/16x5/32 (3) Located 90° from shown (4) Located as shown (5) Located 180° from shown (6) Additional setscrew over keyway (7) Has both .875 and 1.000 square bores @ 45°
Center Kits
Double Yokes
E
ALL DIMENSIONS IN INCHES
Center
A
B
UJS Series 1-61/64 35/64 UJL Series 2-5/16 .644
Kits*
C
D
Approx. Weight (Lbs.)
19/32
31/32
1/2
UJSC
17464
5/8
1-1/16
3/4
UJLC
17466
Catalog Number
Item Code
J
Maximum Operating Angle
Double Yokes Approx. Weight Catalog (Lbs.) Number
UJS Series Forged 2-1/2 15° 1 UJSD UJL Series Forged – 2 piece Welded Construction 4-7/16 35° 2-1/4 UJLD
Item Code 17460 17462
*Center Kits include 1 cross, 4 bearings, 4 cork washers and 4 lock rings.
P-1930-BG
04/10
Boston Gear 800-825-6544
111
Universal Joints JP Series Single and Double Molded Type MOLDED DELRIN BODY provides vibration dampening and electrical insulation. MAX. ANGULAR DISPLACEMENT — Single 45° — Double 90° MAX. AMBIENT TEMPERATURE — 180°F COMPLETE WITH SETSCREWS SINGLE (2) SETSCREWS EACH END (SEE NOTE)
BORE
INSERT
C
STANDARD TOLERANCES Dimensions Tolerance Bore
All
BRASS SPIDER
+ .001 – .000
O.D. L
DOUBLE
Reference Pages Mounting — 312
(2) SETSCREWS EACH END BORE
Materials Delrin Body Nickel Plated Brass Spider and Insert
C
BRASS SPIDER
F
O.D.
L
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
Bore Depth (Typical)
O.D.
.39
1/4
.52
1/8 1/8 3/16 3/16 1/4 1/4 5/16 3/8
L
C Single
Double
.27
1-3/64
1-23/64
3/8
.41
1-31/64
2
.63
1/2
.54
1-13/16
2-7/16
.86
5/8
.68
2-41/64
3-33/64
Double Only Single Max. Setscrew F Catalog Parallel Number Offset 5/16 .22 #4 – 40 JP25 – 1/8* JP37 – 1/8* 17/32 .36 #4 – 40 JP37 – 3/16 JP50 – 3/16 5/8 .43 #6 – 32 JP50 – 1/4 JP62 – 1/4 7/8 .61 #8 – 32 JP62 – 5/16 JP62 – 3/8
Double Item Code
Catalog Number
Item Code
54194 54195 54196 54197 54198 54199 54200 54201
JPD25 – 1/8 JPD37 – 1/8 JPD37 – 3/16 JPD50 – 3/16 JPD50 – 1/4 JPD62 – 1/4 JPD62 – 5/16 JPD62 – 3/8
54202 54203 54204 54205 54206 54207 54208 54209
* One setscrew each end.
E
LOAD DATA
Basic Size 25 37 50 62
Maximum Torque† (Lb. Ins.) Single Double 5 16 26 60
2.5 7 12 47
†This is the ultimate or breaking torque for static, zero angle conditions. Actual operating conditions will dictate use of significantly lower values.
112
Boston Gear 800-825-6544
P-1930-BG
04/10
Universal Joints JPE Series With Slide Extension Molded Type MOLDED DELRIN BODY — provides vibration dampening and electrical insulation. MAX. ANGULAR DISPLACEMENT — Single 45° — Double 90° MAX. AMBIENT TEMPERATURE — 180°F COMPLETE WITH SETSCREWS
(2) SETSCREWS EACH END (SEE NOTE)
STANDARD TOLERANCES Dimensions Tolerance Bore
All
BRASS SPIDERS
B
+ .001 – .000
C IN CLOSED POSITION
BORE D
A
Reference Pages Mounting — 312
G SQ.
F
O.D.
H J
Materials
K IN CLOSED POSITION
Delrin Body Nickel Plated Brass Spider and Insert
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/8 3/16 3/16 1/4
Bore Depth (Typical)
O.D.
A
.52
3/8
.41
.74 2-59/64 1-1/8
.63
1/2
.54
.91 2-23/64 1-1/8 3/8 1-34/64 3/16
B
C
D
E
F
G (Sq.)
– 1-47/64 3/16
H
J
K
Setscrew
Catalog Number
Item Code
JPE37 – 1/8 JPE37 – 3/16 JPE50 – 3/16 2-9/16 4-11/64 #6 – 32 JPE50 – 1/4
23/64 2-43/64 4-13/32 #4 – 40 23/64
Basic Size
54210 54211 54212 54213
LOAD DATA Maximum Recommended Torque (Lb. Ins.) Closed Open
JPE37
8
5
JPE50
14
10
E
†This is the ultimate or breaking torque for static, zero angle conditions. Actual operating conditions will dictate use of significantly lower values.
P-1930-BG
04/10
Boston Gear 800-825-6544
113
Setscrew Collars SC/SSC Series Steel and Stainless Steel STEEL BORE SIZES FROM 1/8” TO 3” STAINLESS STEEL BORE SIZES FROM 1/8” TO 2” STAINLESS STEEL COLLARS ARE CORROSION-RESISTANT AND NONMAGNETIC suitable for temperatures up to 800°F. Ideal for applications requiring hygienic cleanliness. ALL COLLARS COMPLETE WITH STANDARD HOLLOW POINT SETSCREWS.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore SETSCREWS
BORE
OUTSIDE DIA.
WIDTH
STANDARD TOLERANCES Dimensions Tolerance Bore
1/8-1
+ .001 + .003
1-1/16-3
+.001 +.004
Materials Stainless Steel—Type 303 Austenitic. Steel—Low Carbon, Zinc plated finish.
E
114
Boston Gear 800-825-6544
1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-11/16 1-3/4 1-13/16 1-7/8 1-15/16 2 2-1/8 2-3/16 2-1/4 2-5/16 2-3/8 2-7/16 2-1/2 2-9/16 2-11/16 2-3/4 2-15/16 3
Outside Diameter
Width
3/8 7/16 1/2 5/8 3/4 7/8
1/4 1/4 5/16 11/32 3/8 7/16
1
7/16
1-1/8
1/2
1-1/4
9/16
1-1/4 1-1/2 1-5/8 1-1/2
9/16 9/16 9/16 5/8
1-3/4
5/8
2
11/16
2-1/8
11/16 3/4
2-1/4
3/4
2-1/2
13/16
2-5/8
7/8
3
7/8
3-1/4
15/16
3-1/2
1
3-3/4
1
4
1-1/8
4
1-1/8
Alloy Steel Catalog Item Number Code SC12 67697 SC18 67698 SC25 67699 SC31 67700 SC37 67701 SC43 67702 SC50 67703 SC56 67704 SC62 67705 SC68 67706 SC75 67707 SC81 67708 SC87 67709 SC93 67710 SC100 67711 SC106 67712 SC112 67713 SC118 67714 SC125 67715 SC131 67716 SC137 67717 SC143 67718 SC150 67719 SC156 67720 SC162 67721 SC168 67722 SC175 67723 SC181 67724 SC187 67725 SC193 67726 SC200 67727 SC212 67728 SC218 67729 SC225 67730 SC231 67731 SC237 67732 SC243 67733 SC250 67734 SC256 67735 SC268 67736 SC275 67737 SC293 67738 SC300 67739
Stainless Steel Catalog Item Number Code SSC12 67740 SSC18 67741 SSC25 67742 SSC31 67743 SSC37 67744 — — SSC50 67745 — — SSC62 67746 — — SSC75 67747 — — SSC87 67748 — — SSC100 67749 — — SSC112 67784 — — SSC125 67785 — — — — — — SSC150 67788 — — — — — — SSC175 67789 — — — — — — SSC200 67790 — — — — — — — — — — — — — — — — — — — — — — — —
P-1930-BG
04/10
Clamping Collars CSC/CSSC Series Threaded Type; Steel and Stainless Steel DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND REMOVAL prevents shaft damage OSHA CONFORMANCE collars have completely recessed screw head. BORE THREADS FROM 10–32 TO 200–12
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore Thread
Outside Dia.
10-32 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24 1/2-13 1/2-20 5/8-11 5/8-18 3/4-10 3/4-16 7/8-9 7/8-14 1-8 1-14 1-1/8-7 1-1/8-12 1-1/4-7 1-1/4-12 1-1/2-6 1-1/2-12 1-3/4-16 2-12
11/16 13/16 1-1/16 1-1/4 1-1/2 1-3/4 1-7/8 2 2-1/8 2-1/4 2-1/2 3 3-1/4
Steel Clamp Catalog Screws Number 1/4 4-40 CSC10-32 CSC25-20 CSC25-28 1/4 4-40 CSC31-18 CSC31-24 CSC37-16 5/16 6-32 CSC37-24 CSC50-13 3/8 8-32 CSC50-20 CSC62-11 13/32 10-32 CSC62-18 CSC75-10 1/2 1/4-28 CSC75-16 CSC87-9 1/2 1/4-28 CSC87-14 CSC100-8 1/2 1/4-28 CSC100-14 CSC125-7 1/2 1/4-28 CSC112-12 CSC125-7 1/2 1/4-28 CSC125-12 CSC150-6 1/2 1/4-28 CSC150-12 5/8 5/16-24 CSC175-16 5/8 5/16-24 CSC200-12
Width
Item Code 49237 49238 49239 49240 49241 49242 49243 49244 49245 49246 49247 49248 49249 49250 49251 49252 49253 49256 49255 49256 49257 49258 49259 49260 49261
Stainless Steel Catalog Item Number Code — — CSSC25-20 49265 — — — — — — CSSC37-16 49269 CSSC37-24 49270 CSSC50-13 49271 CSSC50-20 49272 CSSC62-11 49273 CSSC62-18 49274 CSSC75-10 49275 CSSC75-16 49276 — — — — CSSC100-8 49279 CSSC100-14 49280 — — — — — — CSSC125-12 49284 — — — — — — — —
OUTSIDE DIA.
WIDTH
BORE
CLAMP SCREW
Materials Steel—Low Carbon, Black Oxide Finish Stainless—Type 303 Austenitic
E
P-1930-BG
04/10
Boston Gear 800-825-6544
115
Clamping Collars CSC/CSSC/CASC Series 1 Piece Type Steel, Stainless Steel and Aluminum DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND REMOVAL prevents shaft damage OSHA CONFORMANCE collars have completely recessed screw head. BORE THREADS FROM 1/8” TO 3” ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Steel Clamp O.D. Width Screws Catalog Item Number Code 1/8 CSC12 49000 3/16 CSC18 49001 1/4 13/16 1/4 4-40 CSC25 49002 5/16 CSC31 49003 3/8 CSC37 49004 7/16 1-1/16 5/16 6-32 CSC43 49005 1/2 CSC50 49006 9/16 1-1/4 3/8 8-32 CSC56 49007 5/8 CSC62 49008 11/16 1-1/2 13/32 10-32 CSC68 49009 3/4 CSC75 49010 13/16 1-3/4 CSC81 49011 7/8 CSC87 49012 15/16 1-7/8 CSC93 49013 1 CSC100 49014 1-1/16 2 CSC106 49015 1/2 1/4-28 CSC112 49016 1-1/8 1-3/16 2-1/8 CSC118 49017 1-3/8 CSC137 49020 1-5/16 2-3/8 CSC143 49021 1-1/2 CSC150 49022 1-9/16 2-1/2 CSC156 49023 1-5/8 CSC162 49024 1-11/16 CSC168 49025 3 1-3/4 CSC175 49026 1-7/8 CSC187 49028 1-15/16 3-1/4 5/8 5/16-24 CSC193 49029 2 CSC200 49030 2-3/16 CSC218 49033 2-1/4 3-1/2 CSC225 49034 2-3/8 CSC237 49036 2-7/16 CSC243 49037 2-1/2 4 CSC250 49038 2-5/8 CSC262 49040 2-11/164-1/4 3/4 3/8-24 CSC268 49041 2-3/4 CSC275 49042 2-7/8 CSC287 49044 2-15/16 4-1/2 CSC293 49045 3 CSC300 49046 Bore
OUTSIDE DIA.
WIDTH
BORE
CLAMP SCREW
STANDARD TOLERANCES Dimensions Tolerance Bore
All
+ .003 – .000
Materials Steel—Low Carbon Black Oxide Finish Stainless—Type 303 Austenitic
Load Data Capacity is based on a standard steel, one-piece collar mounted with recommended screw torque on a lightly oiled shaft. Capacity is load to move collar .010”. Data shown is for guidance only. In applications involving control of axial loads, capacity should be determined experimentally on actual parts involved.
Stainless Steel Catalog Item Number Code CSSC12 49094 CSSC18 49095 CSSC25 49096 CSSC31 49097 CSSC37 49098 CSSC43 49099 CSSC50 49100 CSSC56 49101 CSSC62 49102 — — CSSC75 49104 — — CSSC87 49106 CSSC93 49107 CSSC100 49108 CSSC106 49109 CSSC112 49110 CSSC118 49111 — — CSSC143 49115 CSSC150 49116 — — — — — — — — — — CSSC193 49123 CSSC200 49124 — — — — — — — — — — — — — — — — — — — — — —
Aluminum Catalog Item Number Code — — CASC18 49048 CASC25 49049 CASC31 49050 CASC37 49051 — — CASC50 49053 CASC56 49054 CASC62 49055 — — CASC75 49057 — — CASC87 49059 — — CASC100 49061 — — CASC125 49065 — — — — — — CASC150 49069 — — — — — — CASC175 49073 — — — — CASC200 49077 — — — — — — — — — — — — — — — — — — — — — —
DIMENSION IN INCHES
E
Bore
1/8-5/16 3/8-7/16 1/2-9/16 5/8-11/16 3/4-1-9/16 1-5/8-2-3/8 2-7/16-3
116
Recommended Screw Torque (Lb. Ins.) Stainless Steel Steel 4-40 20 16 6-32 30 24 8-32 55 35 10-32 90 72 1/4-28 220 170 5/16-24 435 340 3/8-24 710 550
Axial Load Capacity Screw Size (Lbs.) 400 600 1400 1800 4000 6500 8500
Boston Gear 800-825-6544
P-1930-BG
04/10
Clamping Collars 2SC/2SSC Series 2 Piece Type Steel, Stainless Steel and Aluminum DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND REMOVAL prevents shaft damage OSHA CONFORMANCE collars have completely recessed screw head. BORE THREADS FROM 1/4” TO 3” ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-11/16 1-3/4 1-13/16 1-7/8 1-15/16 2 2-1/16 2-1/8 2-3/16 2-1/4 2-3/8 2-7/16 2-1/2 2-5/8 2-11/16 2-3/4 2-7/8 2-15/16 3
O.D. 13/16 1-1/16 1-1/4 1-1/2 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 3
3-1/4
3-1/2 4 4-1/4 4-1/2
Steel Clamp Catalog Item Screws Number Code 2SC25 49143 1/4 4-40 2SC31 49144 2SC37 49145 5/16 6-32 2SC43 49146 2SC50 49147 3/8 8-32 2SC56 49148 2SC62 49149 13/32 10-32 2SC68 49150 2SC75 49151 2SC81 49152 2SC87 49153 2SC93 49154 2SC100 49155 2SC106 49156 2SC112 49157 1/2 1/4-28 49158 1/2 1/4-28 2SC118 2SC125 49159 2SC131 49160 2SC137 49161 2SC143 49162 2SC150 49163 2SC156 49164 2SC162 49165 2SC168 49166 2SC175 49167 — — 2SC187 49169 2SC193 49170 2SC200 49171 — — 5/8 5/16-24 2SC212 49173 2SC218 49174 2SC225 49175 2SC237 49177 2SC243 49178 2SC250 49179 2SC262 49181 3/4 3/8-24 2SC268 49182 49183 3/8-24 2SC275 3/4 2SC287 49185 2SC293 49186 2SC300 49187
Width
Stainless Steel Catalog Item Number Code 2SSC25 49190 2SSC31 49191 2SSC37 49192 2SSC43 49193 2SSC50 49194 2SSC56 49195 2SSC62 49196 2SSC68 49197 2SSC75 49198 — — 2SSC87 49200 2SSC100 2SSC106 2SSC112 2SSC118 2SSC125 2SSC131 — 2SSC143 2SSC150 — — — — — 2SSC187 2SSC193 2SSC200 — — — — — — — — — — — — —
49202 49203 49204 49205 49206 49207 — 49209 49210 — — — — — 49216 49217 49218 — — — — — — — — — — — — —
OUTSIDE DIA.
BORE
CLAMP SCREWS
STANDARD TOLERANCES Dimensions Tolerance Bore
04/10
All
+ .003 – .000
Materials Steel—Low Carbon, Black Oxide Finish Stainless—Type 303 Austenitic
Load Data Capacity is based on a standard steel, one-piece collar mounted with recommended screw torque on a lightly oiled shaft. Capacity is load to move collar .010”. Data shown is for guidance only. In applications involving control of axial loads, capacity should be determined experimentally on actual parts involved.
DIMENSION IN INCHES
Bore
Recommended Screw Torque (Lb. Ins.) Stainless Steel Steel 4-40 20 16 6-32 30 24 8-32 55 35 10-32 90 72 1/4-28 220 170 5/16-24 435 340 3/8-24 710 550
Axial Load Capacity Screw Size (Lbs.)
1/8-5/16 3/8-7/16 1/2-9/16 5/8-11/16 3/4-1-9/16 1-5/8-2-3/8 2-7/16-3
P-1930-BG
WIDTH
400 600 1400 1800 4000 6500 8500
Boston Gear 800-825-6544
117
E
Thrust Washers Steel and Stainless Steel
HARDENED AND GROUND STEEL BORE SIZES FROM 3/16” TO 2” STAINLESS STEEL BORE SIZES FROM 3/16” TO 1/2”
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
3/16
1/4 5/16 3/8 STANDARD TOLERANCES Dimensions Tolerance Bore O.D. Thickness
06700 Series
+ .0015 + .0070
18000 Series
+ .002 + .007
06700 Series
+ .000 - .005
18000 Series
± .030
All
+.000 - .005
7/16
1/2
9/16
5/8
3/4
E
118
Boston Gear 800-825-6544
Outside Thick- Catalog Diameter ness Number HARDENED STEEL 1/16 18800 9/32 3/32 18802 1/16 18804 3/8 3/32 18806 7/16 1/16 06724* 1/16 18808 1/2 3/32 18810 9/16 1/16 06726* 5/64 06728* 5/8 1/16 18812 1/8 18814 1/16 18816 5/8 1/8 18818 11/16 3/32 06730* 1/16 18820 7/8 5/32 18822 1/16 18824 3/4 1/8 18826 7/8 1/8 06734* 1/16 18828 1-1/8 5/32 18830 1-1/4 3/16 18832 3/32 18834 1-3/8 3/16 18836 1/16 18838 25/32 1/8 18840 3/32 18842 1-1/4 3/16 18844 1-3/8 3/16 18846 3/32 18848 1-1/2 3/16 18850 1-3/4 3/16 18852 1 3/32 18854 3/32 18856 1-5/16 3/16 18858 1/8 18860 1-5/8 3/16 18862 1-3/4 3/16 18864 2 3/16 18866
Bore
7/8 7/16
1
1-1/16 1-1/8 1-3/16
1-1/4
1-5/16 1-3/8 1-1/2 2 3/16 1/4 5/16 3/8 1/2
Outside Thick- Catalog Diameter ness Number HARDENED STEEL 1-3/16 3/32 18868 2 1/8 18870 2 3/16 18872 2-1/4 3/16 18874 13/16 3/32 06732* 1/8 18876 1-9/16 3/16 18878 1/8 18880 2 3/16 18882 9/64 18884 2-1/4 3/16 18886 2-1/2 1/4 18888 2-1/2 1/4 18890 2-1/2 1/4 18894 2 3/16 18896 9/64 18898 2 3/16 18922 9/64 18900 2-7/16 1/4 18924 2-3/4 9/64 18902 3 1/4 18904 2-3/4 1/4 18906 5/32 18908 3 1/4 18910 5/32 18912 3 1/4 18914 3-1/4 1/8 18916 5/32 18918 4 5/16 18920 STAINLESS STEEL† 7/16 1/16 06760 9/16 1/16 06762 5/8 5/64 06764 11/16 3/32 06766 7/8 1/8 06770
*These washers also listed with AO Bearings. †These washers also listed with SAO Bearings.
P-1930-BG
04/10
Bushings Soft Steel
BORE SIZES FROM 3/16” TO 1-1/4” MULTI-PURPOSE BUSHINGS suitable for use was hole reducers, spacers, standoffs or slip bushings. ADAPTABLE FOR OTHER USES including wear sleeves, liners or cutting arbor studs.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER
Bore 3/16
1/4
5/16
3/8 7/16
1/2
5/8
3/4 7/8 1 1-1/8 1-1/4
Outside ThickDiameter ness 1/4 5/16 5/8 3/8 5/16 5/8 3/8 3/4 1/2 1 3/8 5/8 3/4 1/2 1 3/4 1/2 1 3/4 5/8 1-1/4 3/4 5/8 1-1/4 3/4 5/8 1 1-1/4 3/4 3/4 1 3/4 3/4 1 7/8 1-1/4 7/8 1-1/4 1 1-1/2 1-3/8 2 1-1/2 1-1/2 1 1-1/2 1-1/4 1-3/8 2 2 1-1/4 2 1-3/8 2 1-1/2 1-1/2 2 3
Catalog Number 18510 18512 18516 18514 18518 18522 18524 18520 18526 18528 18530 18532 18534 18536 18538 18540 18542 18544 18546 18554 18556 18560 18562 18566 18568 18574 18626 18606 18576 18596 18602 18622 18598 18604 18614 18624
BORE
OUTSIDE DIA.
LENGTH
STANDARD TOLERANCES Dimensions Tolerance BORE O.D. LENGTH
All
± .0005
Up to 1-1/4 + .0005 +.0015 Over 1-1/4
+ .001 +.002
Up to 1"
+.000 -.007
Over 1"
+.000 -.010
E
P-1930-BG
04/10
Boston Gear 800-825-6544
119
Grooved Pulleys G1200 Round Belt Type BRASS IRON AND STEEL BORE SIZES FROM 3/16” TO 3/4” COMPLETE WITH STANDARD SETSCREWS
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 3/16 1/4
FACE WIDTH
5/16 SETSCREW
OUTSIDE DIA.
BORE
HUB DIA.
1/2
5/8 HUB PROJ.
3/4
Outside Hub V Catalog Project Style Diameter Dia. Groove Number BRASS—3/16” ROUND BELT (or smaller)—1/4” FACE 1/2 1/2 74° G1214 1/4 Plain 7/8 5/8 46° G1215 1 G1216 5/8 5/16 46° Plain 1-1/2 G1217 2 5/8 Webbed G1218 3 3/4 5/16 46° Spoked G1219 4 3/4 Spoked G1220 IRON†—3/8” ROUND BELTS (or smaller)—1/2” FACE 1 15/16 G1202 1-1/2 1 Plain G1203 1/2 2 1 G1204 3 1-1/4 53° G1205 4 Webbed G1206 5 1-5/8 3/4 G1207 6 G1208 Spoked 8 1-3/4 1 G1209
Item Code 18700 18702 18704 18706 18708 18710 18712 18718 18720 18722 18724 18726 18728 18730 18732
†Outside diameter, sides, grooves, hole and ends of hub finished.
STANDARD TOLERANCES Dimensions Tolerance BORE
All
+.001 - .000
E
120
Boston Gear 800-825-6544
P-1930-BG
04/10
Miniature Timing Belts and Pulleys Miniature HTD Timing Belt Drives
Basic Construction Timing belts are essentially flat belts with the addition of evenly spaced teeth along the surface that contacts toothed pulleys. Power is transmitted smoothly and without slippage. Pulley pitch diameters are larger than their outside diameters and the belt pitch lines lie within the flat portion. Tension members are molded in the flat portion to serve as load-carrying elements. Miniature HTD timing belts have deep curvilinear tooth forms, as contrasted to trapezoidal for conventional timing belts. Greater strength, lower tooth pressures and decreased stress concentration result in superior performance.
Selection The following general guidelines apply to selection of miniature HTD timing belts and pulleys: Design with ample reserve horsepower capacity and apply the proper service factors. The belt must have six or more teeth in engagement with the smaller pulley to carry rated Horsepower. Avoid small pulley diameters where practical to assure satisfactory belt life. Belt speed should not exceed 6500 feet per minute. At least one pulley in the drive should be flanged. For vertical shafts or where center distance exceeds eight times the smaller pulley diameter, both pulleys should be flanged.
Horsepower Rating Tables provide ratings for operation no more than ten hours per day under uniform loading. Selection procedures is as follows: 1. Select Service Factor for chart below. 2. Determine Design Horsepower. Design Horsepower = Application Horsepower x Service Factor
3. Select small pulley and belt size from the rating tables, choosing a combination whose rating does not exceed the Design Horsepower. 4. For speed increasing applications an additional amount must be added to the Service Factor. 5. For speeds higher than shown in Rating Tables, consult factory.
SERVICE FACTORS Service Factor
Load Classification Uniform to 10 hrs./day Uniform over 10 hrs./day Moderate Shock to 10 hrs./day Moderate Shock over 10 hrs/day Heavy Shock to 10 hrs./day
1.0 1.5 2.0
SPEED-UP DRIVES Ratio Range 1 through 1.24 1.25 through 1.74 1.75 through 2.49 2.50 through 3.49 3.50 and over
Additional Factor 0 0.1 0.2 0.3 0.4
E
P-1930-BG
04/10
Boston Gear 800-825-6544
121
Miniature Timing Belts and Pulleys Miniature HTD Timing Belt Drives (Continued) Horsepower Ratings 3mm Pitch—6mm Wide Belt
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY PD 100 300 500 700 1160 1500 1750 2500 3500
10
11
12
14
15
16
18
20
22
24
25
28
30
32
.376 .005 .016 .022 .031 .040 .052 .061 .067 .094
.414 .005 .017 .024 .035 .045 .058 .068 .074 .103
.451 .006 .018 .027 .037 .050 .064 .075 .080 .113
.526 .007 .021 .030 .042 .056 .072 .085 .091 .127
.564 .008 .023 .032 .046 .061 .078 .091 .101 .141
.602 .009 .025 .035 .049 .066 .085 .099 .107 .151
.677 .010 .029 .039 .054 .072 .093 .108 .117 .165
.752 .011 .033 .043 .061 .078 .101 .117 .134 .188
.827 .012 .037 .048 .068 .089 .115 .134 .148 .207
.902 .013 .040 .053 .075 .097 .125 .146 .161 .226
.940 .013 .041 .055 .078 .101 .130 .152 .168 .236
1.053 .016 .048 .062 .087 .113 .145 .170 .192 .268
1.128 .019 .055 .066 .092 .120 .155 .182 .200 .278
1.203 .020 .059 .070 .098 .127 .165 .194 .213 .296
3mm Pitch—9mm Wide Belt
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY PD 100 300 500 700 1160 1500 1750 2500 3500
10
11
12
14
15
16
18
20
22
24
25
28
30
32
.376 .007 .025 .035 .049 .063 .082 .097 .106 .149
.414 .008 .027 .038 .056 .071 .092 .108 .117 .163
.451 .009 .029 .043 .059 .079 .101 .119 .127 .179
.526 .011 .033 .048 .067 .089 .114 .135 .144 .201
.564 .013 .036 .051 .073 .097 .123 .144 .160 .223
.602 .014 .040 .055 .078 .104 .135 .157 .169 .239
.677 .016 .046 .062 .085 .114 .147 .171 .185 .262
.752 .017 .052 .068 .096 .123 .160 .185 .212 .298
.827 .019 .059 .076 .107 .141 .182 .212 .235 .328
.902 .021 .063 .084 .119 .154 .198 .231 .255 .358
.940 .022 .066 .088 .124 .160 .206 .241 .266 .372
1.053 .025 .076 .098 .138 .179 .230 .269 .304 .425
1.128 .030 .087 .104 .146 .190 .246 .289 .317 .441
1.203 .032 .092 .111 .156 .203 .263 .308 .338 .470
25 1.566 .053 .159 .206 .291 .375 .484 .562 .613 .856
28 1.754 .063 .186 .231 .324 .420 .543 .633 .687 .960
30 1.880 .069 .204 .249 .348 .447 .579 .675 .735 1.03
5mm Pitch—9mm Wide Belt
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY PD 100 300 500 700 1160 1500 1750 2500 3500
11 .689 .021 .063 .090 .129 .162 .210 .243 .267 .372
12 .752 .024 .069 .099 .138 .180 .231 .270 .291 .405
14 .877 .027 .081 .117 .162 .207 .270 .315 .342 .477
15 .940 .030 .090 .126 .174 .225 .291 .339 .366 .510
16 1.003 .033 .096 .132 .186 .240 .309 .360 .393 .549
18 1.128 .039 .108 .150 .210 .270 .348 .405 .441 .615
20 1.253 .042 .126 .165 .231 .300 .387 .453 .492 .690
22 1.379 .045 .138 .183 .255 .327 .423 .495 .540 .756
24 1.504 .051 .153 .198 .279 .360 .465 .540 .588 .822
E
122
Boston Gear 800-825-6544
P-1930-BG
04/10
Miniature Timing Belts and Pulleys Miniature HTD Timing Belt Drives (Continued) Horsepower Ratings 5mm Pitch—15mm Wide Belt NUMBER OF GROOVES ON THE SMALL PULLEY
RPM of Small Pulley
PD 100 300 500 700 1160 1500 1750 2500 3500
11
12
14
15
16
18
20
22
24
28
30
.689 .038 .115 .164 .236 .296 .384 .445 .489 .681
.752 .043 .126 .181 .252 .329 .423 .494 .533 .742
.877 .049 .148 .214 .296 .379 .494 .577 .626 .874
.940 .054 .164 .230 .318 .412 .533 .621 .670 .934
1.003 .060 .175 .241 .340 .439 .566 .649 .720 1.00
1.128 .071 .197 .274 .384 .494 .637 .742 .808 1.12
1.253 .076 .230 .302 .423 .549 .709 .830 .901 1.26
1.379 .082 .252 .335 .467 .599 .775 .907 .989 1.38
1.504 .093 .280 .362 .511 .659 .852 .989 1.07 1.50
1.754 .115 .340 .423 .593 .769 .995 1.16 1.25 1.75
1.880 .126 .373 .456 .637 .819 1.06 1.23 1.34 1.88
Belt life will be reduced for ratings to the left of the heavy line.
Center Distance
Installation Suggestions
To calculate the approximate Belt Length:
1. Use care in handling belts to avoid breakage of the reinforcing fibers.
BL = 2C +
D1 – D2 + 1.57 (D1 + D2) 4C
An approximate formula for center distance of a timing belt drive is:
2. Make sure shafts are parallel and pulleys in alignment. 3. Belt should fit snugly, neither too loose nor too tight. Avoid preload, which can cause premature failure. 4. Provision for some Center Distance adjustment will ease the installation and permit proper initial fitting of belts.
BL = 2C +
(D1 – D2) 4C
+ 1.57 (D1 + D2)
Where: C = Center Distance—Inches P = Belt Pitch—Inches NB = Number of Teeth in Belt N1 = Number of Grooves in larger Pulley N2 = Number of Grooves in smaller Pulley BL = Belt Length D1 = Pitch Diameter of larger Pulley
E
D2 = Pitch Diameter of smaller Pulley
P-1930-BG
04/10
Boston Gear 800-825-6544
123
Miniature HTD Timing Belts ®
3M Series 6 and 9mm Widths 3mm Pitch NEOPRENE–NYLON COVERED, FIBERGLASS REINFORCED AMBIENT TEMPERATURE RANGE— –18°C TO +85°C BREAKING STRENGTH–6 mm WIDTH – 74.4 KGS 9 mm WIDTH – 111.6 KGS
3 MM. .118 IN.
2.41 MM. .095 IN.
1.17 MM. .046 IN.
ORDER BY CATALOG NUMBER OR ITEM CODE Number of Grooves 35 37 48 49 50 52 53 56 59 60 65 67 68 69 70 71 75 78 80 84 85 89 90 92 94 95 96 97 99 100 104 106 111 112 113 115 119
E
®
Pitch Length mm
Inch
105 111 144 147 150 156 159 168 177 180 195 201 204 207 210 213 225 234 240 252 255 267 270 276 282 285 288 291 297 300 312 318 333 336 339 345 357
4.134 4.370 5.669 5.787 5.905 6.142 6.260 6.614 6.968 7.087 7.677 7.913 8.031 8.150 8.268 8.386 8.858 9.213 9.449 9.921 10.039 10.512 10.630 10.866 11.102 11.220 11.339 11.457 11.693 11.811 12.283 12.520 13.110 13.228 13.346 13.583 14.055
6mm Belt Width Catalog Item Number Code
9mm Belt Width Catalog Item Number Code
3M035060 3M037060 3M048060 3M049060 3M050060 3M052060 3M053060 3M056060 3M059060 3M060060 3M065060 3M067060 3M068060 3M069060 3M070060 3M071060 3M075060 3M078060 3M080060 3M084060 3M085060 3M089060 3M090060 3M092060 3M094060 3M095060 3M096060 3M097060 3M099060 3M100060 3M104060 3M106060 3M111060 3M112060 3M113060 3M115060 3M119060
3M035090 3M037090 3M048090 3M049090 3M050090 3M052090 3M053090 3M056090 3M059090 3M060090 3M065090 3M067090 3M068090 3M069090 3M070090 3M071090 3M075090 3M078090 3M080090 3M084090 3M085090 3M089090 3M090090 3M092090 3M094090 3M095090 3M096090 3M097090 3M099090 3M100090 3M104090 3M106090 3M111090 3M112090 3M113090 3M115090 3M119090
54214 54215 54216 54217 54218 54219 54220 54221 54222 54223 54224 54225 54226 54227 54228 54229 54230 54231 54232 54233 54234 54236 54237 54238 54239 54240 54241 54242 54243 54244 54245 54246 54247 54248 54249 54250 54251
54290 54291 54292 54293 54294 54295 54296 54297 54298 54299 54300 54301 54302 54303 54304 54305 54306 54307 54308 54309 54310 54312 54313 54314 54315 54316 54317 54318 54319 54320 54321 54322 54323 54324 54325 54326 54327
Number of Grooves 121 128 130 132 140 145 149 153 155 158 160 162 163 167 171 175 177 179 188 192 199 200 204 211 223 237 250 251 294 315 354 375 415 421 500 510 621
Pitch Length mm
Inch
363 384 390 396 420 435 447 459 465 474 480 486 489 501 513 525 531 537 564 576 597 600 612 633 669 711 750 753 892 945 1062 1125 1245 1263 1500 1530 1863
14.291 15.118 15.354 15,591 16.535 17.126 17.598 18.071 18.307 18.661 18.898 19.134 19.252 19.724 20.197 20.670 20.905 21.142 22.205 22.677 23.504 23.622 24.094 24.921 26.338 27.992 29.527 29.646 34.724 37.205 41.811 44.291 49.016 49.724 59.055 60.235 73.346
6mm Belt Width Catalog Item Number Code
9mm Belt Width Catalog Item Number Code
3M121060 3M128060 3M130060 3M132060 3M140060 3M145060 3M149060 3M153060 3M155060 3M158060 3M160060 3M162060 3M163060 3M167060 3M171060 3M175060 3M177060 3M179060 3M188060 3M192060 3M199060 3M200060 3M204060 3M211060 3M223060 3M237060 3M250060 3M251060 3M294060 3M315060 3M354060 3M375060 3M415060 3M421060 3M500060 3M510060 3M621060
3M121090 3M128090 3M130090 3M132090 3M140090 3M145090 3M149090 3M153090 3M155090 3M158090 3M160090 3M162090 3M163090 3M167090 3M171090 3M175090 3M177090 3M179090 3M188090 3M192090 3M199090 3M200090 3M204090 3M211090 3M223090 3M237090 3M250090 3M251090 3M294090 3M315090 3M354090 3M375090 3M415090 3M421090 3M500090 3M510090 3M621090
54252 54253 54254 54255 54256 54257 54258 54259 54260 54261 54262 54263 54264 54265 54266 54267 54268 54269 54270 54271 54272 54273 54274 54275 54276 54277 54278 54279 54280 54281 54282 54283 54284 54285 54286 54287 54288
54328 54329 54330 54331 54332 54333 54334 54335 54336 54337 54338 54339 54340 54341 54342 54343 54344 54345 54346 54347 54348 54349 54350 54351 54352 54353 54354 54355 54356 54357 54358 54360 54361 54362 54363 54364 54365
Registered trademark of UNIROYAL, INC.
124
Boston Gear 800-825-6544
P-1930-BG
04/10
Timing Belt Pulleys PA Series For 6mm Wide Belts 3mm Pitch; Aluminum ALUMINUM ALLOY – CLEAR ANODIZED COMPLETE WITH SETSCREWS WITH FLANGES 10 TO 17 GROOVES
WITH FLANGES 18 TO 44 GROOVES
L
SETSCREW D
FACE
L
D/2
FACE
D D/2 SETSCREW
O.D.
C
O.D.
C
BORE FLANGE DIAMETER
FLANGE DIAMETER
BORE
WITHOUT FLANGES
STANDARD TOLERANCES
L
Dimensions
D
FACE
Bore
All 10-26 Grooves O.D. 28-48 Grooves 60-72 Grooves
D/2
O.D.
C
Tolerance +.001 to –.000 +.002 to –.000 +.003 to –.000 +.004 to –.000
BORE
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 10 11 12 13 14 15 16 17 18 19 20 22 24 25 26 28 30 32 34 36 38 40 44 48 50 56 60 62 72
Pitch Dia. O.D. .376 .414 .451 .489 .526 .564 .602 .639 .677 .714 .752 .827 .902 .940 .977 1.053 1.128 1.203 1.278 1.353 1.429 1.504 1.654 1.805 1.880 2.105 2.256 2.331 2.707
B
Face Width
.346 .125 .384 .421 .459 .282 .496 .1875 .534 .572 .609 .647 .684 .722 .797 .872 .386 .910 .947 .250 1.023 1.098 1.173 1.248 1.323 1.399 1.474 1.624 1.775 .407 1.850 2.075 2.226 .3125 2.301 2.677
C .505 .530 .580 .610 .635 .685 .710 .740 .442 .468 .500 .562 .625 .625 .625 .701 .776 .851 .921 1.000 1.075 1.150 1.300
1.250
With Flanges Flange Item Dia. Setscrew* Catalog Number Code .505 PA3010DF060 54448 #4–40 .530 PA3011DF060 54449 .580 PA3012DF060 54450 .610 PA3013DF060 54451 15/64 9/16 .635 PA3014DF060 54452 #6–40 .685 PA3015DF060 54453 .710 PA3016DF060 54454 .740 PA3017DF060 54455 .790 PA3018DF060 54456 .815 PA3019DF060 54457 .895 PA3020DF060 54458 .945 PA3022DF060 54459 11/16 1.025 PA3024DF060 54460 1.060 PA3025DF060 54461 1.105 PA3026DF060 54462 19/64 1.173 PA3028DF060 54463 1.250 PA3030DF060 54464 1.323 PA3032DF060 54465 1.398 #8–32 PA3034DF060 54466 1.473 PA3036DF060 54467 23.32 1.549 PA3038DF060 54468 1.625 PA3040DF060 54469 1.775 PA3044DF060 54470 – – – – – – – – – 21/64 47/64 – – – – – – – – – D
L
Without Flanges Catalog Item Number Code – – – – – – – – – – – – – – – – PA3018NF060 54471 PA3019NF060 54472 PA3020NF060 54473 PA3022NF060 54474 PA3024NF060 54475 PA3025NF060 54476 PA3026NF060 54477 PA3028NF060 54478 PA3030NF060 54479 PA3032NF060 54480 PA3034NF060 54481 PA3036NF060 54482 PA3038NF060 54483 PA3040NF060 54484 PA3044NF060 54485 PA3048NF060 54486 PA3050NF060 54487 PA3056NF060 54488 PA3060NF060 54489 PA3062NF060 54490 PA3072NF060 54991
*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°
P-1930-BG
04/10
Boston Gear 800-825-6544
125
E
Timing Belt Pulleys PA Series For 9mm Wide Belts 3mm Pitch; Aluminum ALUMINUM ALLOY – CLEAR ANODIZED COMPLETE WITH SETSCREWS WITH FLANGES 10 TO 17 GROOVES
WITH FLANGES 18 TO 44 GROOVES
L
SETSCREW D
FACE
L
D/2
D
FACE
D/2 SETSCREW
O.D.
C
O.D.
C
BORE FLANGE DIAMETER
FLANGE DIAMETER
BORE
WITHOUT FLANGES STANDARD TOLERANCES
Dimensions Bore
L
Tolerance
All 10-26 Grooves O.D. 28-48 Grooves 60-72 Grooves
FACE
+.001 to –.000 +.002 to –.000 +.003 to –.000 +.004 to –.000
D D/2
O.D.
C
BORE
ORDER BY CATALOG NUMBER OR ITEM CODE
E
Number of Grooves 10 11 12 13 14 15 16 17 18 19 20 22 24 25 26 28 30 32 34 36 38 40 44 48 50 56 60 62 72
Pitch Dia. O.D. .376 .414 .451 .489 .526 .564 .602 .639 .677 .714 .752 .827 .902 .940 .977 1.053 1.128 1.203 1.278 1.353 1.429 1.504 1.654 1.805 1.880 2.105 2.256 2.331 2.707
.346 .384 .421 .459 .496 .534 .572 .609 .647 .684 .722 .797 .872 .910 .947 1.023 1.098 1.173 1.248 1.323 1.399 1.474 1.624 1.775 1.850 2.075 2.226 2.301 2.677
B
Face Width
.125 .401 .1875
.506 .250
.527
.3125
.500
With Flanges Flange Setscrew* Catalog Item Dia. Number Code .505 .505 PA3010DF090 54492 #4–40 .530 .530 PA3011DF090 54493 .580 .580 PA3012DF090 54494 .610 15/64 11/16 .610 PA3013DF090 54495 .635 .635 PA3014DF090 54496 .685 .685 #6–40 PA3015DF090 54497 .710 .710 PA3016DF090 54498 .740 .740 PA3017DF090 54499 .442 .790 PA3018DF090 54500 .468 .815 PA3019DF090 54501 .500 .895 PA3020DF090 54502 .562 .945 PA3022DF090 54503 .625 13/16 1.025 PA3024DF090 54504 .625 1.060 PA3025DF090 54505 .625 1.105 PA3026DF090 54506 .701 19/64 1.173 PA3028DF090 54507 .776 1.250 PA3030DF090 54508 .851 1.323 PA3032DF090 54509 .921 1.398 #8–32 PA3034DF090 54510 1.000 1.473 PA3036DF090 54511 1.075 27/32 1.549 PA3038DF090 54512 1.150 1.625 PA3040DF090 54513 1.300 1.775 PA3044DF090 54514 – – – – – – – – – 1.250 3/8 7/8 – – – – – – – – – C
D
L
Without Flanges Catalog Item Number Code – – – – – – – – – – – – – – – – PA3018NF090 54515 PA3019NF090 54516 PA3020NF090 54517 PA3022NF090 54518 PA3024NF090 54519 PA3025NF090 54520 PA3026NF090 54521 PA3028NF090 54522 PA3030NF090 54523 PA3032NF090 54524 PA3034NF090 54525 PA3036NF090 54526 PA3038NF090 54527 PA3040NF090 54528 PA3044NF090 54529 PA3048NF090 54530 PA3050NF090 54531 PA3056NF090 54532 PA3060NF090 54533 PA3062NF090 54534 PA3072NF090 54535
*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°
126
Boston Gear 800-825-6544
P-1930-BG
04/10
Timing Belt Pulleys PL Series For 9mm Wide Belts 3mm Pitch; Lexan LEXAN – FIBERGLASS REINFORCED SINGLE FLANGE 10-28 GROOVES
SINGLE FLANGE 32-120 GROOVES
L
L FACE 3/16
D
1/2
D
C F.D.
O.D. B
O.D.
F.D. B
C
FACE
DOUBLE FLANGE 10-28 GROOVES
DOUBLE FLANGE 32-80 GROOVES
Bore
L
L
STANDARD TOLERANCES Dimension Tolerances
All
+.001 to –.000
D
D
C
O.D. B
O.D.
F.D.
F.D. B
C
3/16
FACE
FACE
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 10 11 12 13 14 15 16 17 18 19 20 22 25 28 32 36 40 48 60 72 80 84 96 120
Pitch Dia. O.D. .376 .414 .451 .489 .526 .564 .602 .639 .677 .714 .752 .827 .940 1.053 1.203 1.353 1.504 1.805 2.256 2.707 3.008 3.158 3.609 4.511
B
.346 .384 .421 .459 .496 .534 3/16 .572 .609 .647 .684 .722 .797 .910 1.023 1.173 1.323 1/4 1.474 1.775 2.226 2.677 2.978 5/16 3.128 3.579 4.481 3/8
Face Width
C
D
5/8
11/16 1/4 7/16 3/4
7/8 5/16 1/2
1
3/8
Single Flange Flange Catalog Item Dia. Number Code PL3010SF090 54536 .63 PL3011SF090 54537 3/4* PL3012SF090 54538 PL3013SF090 54539 .69 PL3014SF090 54540 .73 PL3015SF090 54541 .78 PL3016SF090 54542 .87 PL3017SF090 54543 .93 PL3018SF090 54544 .93 PL3019SF090 54545 .93 PL3020SF090 54546 13/16 1.06 PL3022SF090 54547 1.19 PL3025SF090 54548 1.24 PL3028SF090 54549 1.44 PL3032SF090 54550 1.57 PL3036SF090 54551 1.76 PL3040SF090 54552 2.02 PL3048SF090 54553 2.46 PL3060SF090 54554 13/16** 2.92 PL3072SF090 54555 3.29 PL3080SF090 54556 3.38 PL3084SF090 54557 13/16 3.83 PL3096SF090 54558 7/8 – PL3120NF090† 54559 L
Double Flange Catalog Item Number Code PL3010DF090 54560 PL3011DF090 54561 PL3012DF090 54562 PL3013DF090 54563 PL3014DF090 54564 PL3015DF090 54565 PL3016DF090 54566 PL3017DF090 54567 PL3018DF090 54568 PL3019DF090 54569 PL3020DF090 54570 PL3022DF090 54571 PL3025DF090 54572 PL3028DF090 54573 PL3032DF090 54574 PL3036DF090 54575 PL3040DF090 54576 PL3048DF090 54577 PL3060DF090 54578 PL3072DF090 54579 PL3080DF090 54580 – – – – – –
*13/16” for Double Flanges **7/8” for Double Flanges †No Flange
P-1930-BG
04/10
Boston Gear 800-825-6544
127
E
Timing Belt Pulleys PLB Series For 9mm Wide Belts 3mm Pitch; Lexan LEXAN – FIBERGLASS REINFORCED KNURLED ALUMINUM INSERTS COMPLETE WITH SETSCREWS SINGLE FLANGE 10-16 GROOVES
SINGLE FLANGE 17-28 GROOVES
L
SETSCREW
D 1 8
L
SETSCREW
5 32
D
A C F.D.
O.D. B
O.D.
SPOT DRILL
FACE
A C F.D.
B 3 16
SPOT DRILL
FACE
DOUBLE FLANGE 10-16 GROOVES
STANDARD TOLERANCES
Dimension Bore All
Tolerance +.001 to –.000
DOUBLE FLANGE 17-28 GROOVES SETSCREW L D 5 32
L D 1 8
O.D. B
SETSCREW
A
FACE
C
F.D.
SPOT DRILL
O.D.
B
A C
3 16 FACE
F.D.
SPOT DRILL
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 10 11 12 13 14 15 16 17 18 19 20
E
22 25 28
128
Single Flange Flange SetCatalog Item Dia. screw Number Code .376 .346 PLB3010SF090 54581 .414 .384 5/8 3/4 .63 PLB3011SF090 54582 .451 .421 PLB3012SF090 54583 .489 .459 3/16 PLB3013SF090 54584 .526 .496 .69 PLB3014SF090 54585 .564 .534 .73 PLB3015SF090 54586 .602 .572 .78 PLB3016SF090 54587 3/16 3/8 .87 #6–32 PLB3017SF09-3/16 54588 .639 .609 1/4 PLB3017SF09-1/4 54589 3/16 11/16 1/4 PLB3018SF09-3/16 54590 .677 .647 1/4 PLB3018SF09-1/4 54591 7/16 PLB3019SF09-3/16 54592 .93 .714 .684 3/16 PLB3019SF-09-1/4 54593 3/16 13/16 PLB3020SF09-3/16 54594 .752 .722 1/4 PLB3020SF09-1/4 54595 .827 .797 3/16 1.06 PLB3022SF09-3/16 54596 1/4 PLB3025SF09-1/4 54598 .940 .910 5/16 PLB3025SF09-5/16 54599 1.19 3/8 PLB3025SF09-3/8 54600 3/4 1/2 #8–32 PLB3028SF09-1/4 54601 1/4 1.053 1.023 5/16 1.24 PLB3028SF09-5/16 54602 3/8 PLB3028SF09-3/8 54603 Pitch O.D. Dia.
B
Face Width
Boston Gear 800-825-6544
C
D Insert L Dia.
Double Flanges Catalog Item Number Code PLB3010DF090 54633 PLB3011DF090 54634 PLB3012DF090 54635 PLB3013DF090 54636 PLB3014DF090 54637 PLB3015DF090 54638 PLB3016DF090 54639 PLB3017DF09-3/16 54640 PLB3017DF09-1/4 54641 PLB3018DF09-3/16 54642 PLB3018DF09-1/4 54643 PLB3019DF09-3/16 54644 PLB3019DF09-1/4 54645 PLB3020DF09-3/16 54646 PLB3020DF09-1/4 54647 PLB3022DF09-3/16 54649 PLB3025DF09-1/4 54650 PLB3025DF09-5/16 54651 PLB3025DF09-3/8 54652 PLB3028DF09-1/4 54653 PLB3028DF09-5/16 54654 PLB3028DF09-3/8 54655
P-1930-BG
04/10
Timing Belt Pulleys PLB Series For 9mm Wide Belts 3mm Pitch; Lexan LEXAN – FIBERGLASS REINFORCED KNURLED ALUMINUM INSERTS COMPLETE WITH SETSCREWS
SINGLE FLANGE
DOUBLE FLANGE
SETSCREW
SETSCREW L D 5 32
L D
5 32
O.D.
O.D.
A C F.D.
A C
B
F.D. STANDARD TOLERANCES Dimension Tolerance
B 3 16 FACE
Bore
3 16
SPOT DRILL
FACE
All
+.001 to –.000
SPOT DRILL
ORDER BY CATALOG NUMBER OR ITEM CODE
Number Pitch O.D. of Grooves Dia. 32 36 40 48 60 72 80 84 96 120
B
1/4 1.203 1.173 5/16 3/8 1/4 1.353 1.323 5/16 3/8 1/4 1.504 1.474 5/16 3/8 1/4 1.805 1.775 5/16 3/8 5/16 2.256 2.226 3/8 1/2 5/16 2.707 2.677 3/8 1/2 5/16 3.008 2.978 3/8 1/2 5/16 3.158 3.128 3/8 1/2 5/16 3.609 3.579 3/8 1/2 4.511 4.481 3/8 1/2
Face Width
C
3/4
7/16
7/8
1 1/2
Single Flange Flange SetCatalog Dia. screw Number PLB3032SF09-1/4 1.44 PLB3032SF09-5/16 PLB3032SF09-3/8 PLB3036SF09-1/4 1.57 PLB3036SF09-5/16 PLB3036SF09-3/8 1/4 1/2 13/16 #8–32 PLB3040SF09-1/4 1.76 PLB3040SF09-5/16 PLB3040SF09-3/8 PLB3048SF09-1/4 2.02 PLB3048SF09-5/16 PLB3048SF09-3/8 PLB3060SF09-5/16 2.46 PLB3060SF09-3/8 PLB3060SF09-1/2 PLB3072SF09-5/16 13/16† 2..92 PLB3072SF09-3/16 PLB3072SF09-1/2 PLB3080SF09-5/16 5/16 5/8 3.29 #10–32 PLB3080SF09-3/8 PLB3080SF09-1/2 PLB3084SF09-5/16 3.38 PLB3084SF09-3/8 PLB3084SF09-1/2 13/16 PLB3096SF09-5/16 3.83 PLB3096SF09-3/8 PLB3096SF09-1/2 PLB3120NF09-3/8* 3/8 7/8 – PLB3120NF09-1/2* D
Insert Dia.
L
Item Code 54604 54605 54606 54607 54608 54609 54610 54611 54612 54613 54614 54615 54616 54617 54618 54619 54620 54621 54622 54623 54624 54625 54626 54627 54628 54629 54630 54631 54632
Double Flanges Catalog Item Number Code PLB3032DF09-1/4 54656 PLB3032DF09-5/16 54657 PLB3032DF09-3/8 54658 PLB3036DF09-1/4 54659 PLB3036DF09-5/16 54660 PLB3036DF09-3/8 54661 PLB3040DF09-1/4 54662 PLB3040DF09-5/16 54663 PLB3040DF09-3/8 54664 PLB3048DF09-1/4 54665 PLB3048DF09-5/16 54666 PLB3048DF09-3/8 54667 PLB3060DF09-5/16 54668 PLB3060DF09-3/8 54669 PLB3060DF09-1/2 54670 PLB3072DF09-5/16 54671 PLB3072DF09-3/8 54672 PLB3072DF09-1/2 54673 PLB3080DF09-5/16 54674 PLB3020DF09-3/8 54675 PLB3080DF09-1/2 54676 – – – – – – – – – – – – – – – –
†7/8” for Double Flange *No Flange
P-1930-BG
04/10
Boston Gear 800-825-6544
129
E
Miniature HTD® Timing Belts 5M Series 9 and 15mm Widths 5mm Pitch NEOPRENE–NYLON COVERED, FIBERGLASS REINFORCED AMBIENT TEMPERATURE RANGE— –18°C TO +85°C BREAKING STRENGTH–6 mm WIDTH – 234 KGS 9 mm WIDTH – 390 KGS
3.56 MM. .140 IN.
5 MM. .197 IN.
2.08 MM. .082 IN.
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 64 66 70 75 80 85 90 95 100 107 113 120 123 127 133 134 142 148 151 160 166 167 170 178 185 186 190 200 210 225 254 284 319 358 360 374 379 389 400 505
E
Pitch Length mm
Inch
320 330 350 375 400 425 450 475 500 535 565 600 615 635 665 670 710 740 755 800 830 835 850 890 925 930 950 1000 1050 1125 1270 1420 1595 1790 1800 1870 1895 1945 2000 2525
12.598 12.992 13.779 14.764 15.748 16.732 17.716 18.700 19.685 21.063 22.244 23.622 24.213 25.000 26.181 26.378 27.953 29.134 29.724 31.596 32.677 32.874 33.464 35.039 36.417 36.614 37.401 39.370 41.339 44.291 50.000 55.905 62.795 70.472 70.866 73.622 74.606 76.575 78.740 99.409
9mm Belt Width Catalog Item Number Code – – 5M066090 54367 5M070090 54368 5M075090 54369 5M080090 54370 5M085090 54371 5M090090 54372 5M095090 54373 5M100090 54374 5M107090 54376 5M113090 54377 5M120090 54378 5M123090 54379 5M127090 54380 5M133090 54381 5M134090 54382 5M142090 54383 5M148090 54384 5M151090 54385 5M160090 54386 5M166090 54387 5M167090 54388 5M170090 54389 5M178090 54390 5M185090 54390 5M186090 54392 5M190090 54393 5M200090 54394 5M210090 54395 5M225090 54396 5M254090 54397 5M284090 54398 5M319090 54399 5M358090 54400 5M360090 54401 5M374090 54402 5M379090 54403 5M389090 54404 5M400090 54405 5M505090 54406
15mm Belt Width Catalog Item Number Code 5M064150 54407 5M066150 54408 5M070150 54409 5M075150 54410 5M080150 54411 5M085150 54412 5M090150 54413 5M095150 54414 5M100150 54415 5M107150 54417 5M113150 54418 5M120150 54419 5M123150 54420 5M127150 54421 5M133150 54422 5M134150 54423 5M142150 54424 5M148150 54425 5M151150 54426 5M160150 54427 5M166150 54428 5M167150 54429 5M170150 54430 5M178150 54431 5M185150 54432 5M186150 54433 5M190150 54434 5M200150 54435 5M210150 54436 5M225150 54437 5M254150 54438 5M284150 54439 5M319150 54440 5M358150 54441 5M360150 54442 5M374150 54443 5M379150 54444 5M389150 54445 5M400150 54446 5M505150 54447
®Registered trademark of UNIROYAL, INC.
130
Boston Gear 800-825-6544
P-1930-BG
04/10
Timing Belt Pulleys PA Series For 9mm Wide Belts 5mm Pitch; Aluminum ALUMINUM ALLOY – CLEAR ANODIZED COMPLETE WITH SETSCREWS
WITH FLANGE
WITHOUT FLANGE
L
L
D
FACE
O.D.
D
FACE
D/2 SETSCREW
D/2
O.D.
C
C STANDARD TOLERANCES
Dimension
BORE
BORE
FLANGE DIAMETER
Bore
All 12-16 Grooves 17-32 Grooves O.D. 34-62 Grooves 72 Grooves
Tolerance +.001 to –.000 +.002 to –.000 +.003 to –.000 +.004 to –.000 +.005 to –.000
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 12 13 14 15 16 17 18 19 20 22 24 25 26 28 30 32 34 36 38 40 44 48 50 56 60 62 72
Pitch O.D. Dia. .752 .815 .877 .940 1.003 1.065 1.128 1.191 1.253 1.379 1.504 1.566 1.629 1.754 1.880 2.005 2.130 2.256 2.381 2.506 2.757 3.008 3.133 3.509 3.760 3.885 4.511
B
Face Width
C
.707 7/16 .770 1/2 .832 1/2 .895 9/16 .958 9/16 1.020 5/8 1.083 11/16 1.146 3/4 1.208 .250 13/16 1.334 15/16 1.459 1 1.521 1 1.584 1-1/16 1.709 35/64 1-3/16 1.835 1-3/16 1.960 1-1/4 2.085 1-3/8 2.211 2.336 .3125 2.461 2.712 2.963 1-1/2 3.088 3.464 .375 3.715 3,840 4.466
With Flanges Flange Item Setscrew* Catalog Dia. Number Code 7/8 PA5012DF090 54677 15/16 PA5013DF090 54678 1 PA5014DF090 54679 1-1/16 PA5015DF090 54680 1/4 51/64 1-3/32 PA5016DF090 54681 1-3/16 PA5017DF090 54682 1-1/4 PA5018DF090 54683 1-5/16 PA5019DF090 54684 1-3/8 PA5020DF090 54685 1-1/2 PA5022DF090 54686 1-5/8 #8–32 PA5024DF090 54687 1-11/16 PA5025DF090 54688 1-3/4 PA5026DF090 54689 5/16 55/64 1-7/8 PA5028DF090 54690 2 PA5030DF090 54691 2-1/8 PA5032DF090 54692 2-1/4 PA5034DF090 54693 – – – – – – – – – – – – 25/64 15/16 – – – – – – – #10–32 – – – – – – – – – – – D
L
Without Flanges Catalog Item Number Code PA5012NF090 56494 PA5013NF090 56495 PA5014NF090 56496 PA5015NF090 56497 PA5016NF090 56498 PA5017NF090 56499 PA5018NF090 54700 PA5019NF090 54701 PA5020NF090 54702 PA5022NF090 54703 PA5024NF090 54704 PA5025NF090 54705 PA5026NF090 54706 PA5028NF090 54707 PA5030NF090 54708 PA5032NF090 54709 PA5034NF090 54710 PA5036NF090 54711 PA5038NF090 54712 PA5040NF090 54713 PA5044NF090 54714 PA5048NF090 54715 PA5050NF090 54716 PA5056NF090 54717 PA5060NF090 54718 PA5062NF090 54719 PA5072NF090 54720
*Pulleys with 12 and13 grooves have one setscrew. All others have two at 90°
P-1930-BG
04/10
Boston Gear 800-825-6544
131
E
Timing Belt Pulleys PA Series For 15mm Wide Belts 5mm Pitch; Aluminum ALUMINUM ALLOY – CLEAR ANODIZED† COMPLETE WITH SETSCREWS
WITH FLANGE
WITHOUT FLANGE
L
L FACE
FACE
D
STANDARD TOLERANCES
Dimension Bore
All 12-16 Grooves 17-32 Grooves O.D. 34-62 Grooves 72 Grooves
O.D.
C
Tolerance +.001 to –.000 +.002 to –.000 +.003 to –.000 +.004 to –.000 +.005 to –.000
D D/2
D/2 SETSCREW
O.D.
C
BORE
FLANGE DIAMETER
BORE
ORDER BY CATALOG NUMBER OR ITEM CODE
E
Number of Grooves 12 13 14 15 16 17 18 19 20 22 24 25 26 28 30 32 34 36 38 40 44 48 50 56 60 62 72
With Flanges Flange Item Setscrew* Catalog Dia. Number Code .752 .707 7/16 7/8 PA5012DF150 54721 .815 .770 1/2 15/16 PA5013DF150 54722 .877 .832 1/2 1 PA5014DF150 54723 .940 .895 9/16 1-1/16 PA5015DF150 54724 1.003 .958 9/16 1/4 1-1/32 1-3/32 PA5016DF150 54725 1.065 1.020 5/8 1-3/16 PA5017DF150 54726 1.128 1.083 11/16 1-1/4 PA5018DF150 54727 1.191 1.146 3/4 1-5/16 PA5019DF150 54728 1.253 1.208 .250 13/16 1-3/8 PA5020DF150 54729 1.379 1.334 15/16 1-1/2 PA5022DF150 54730 1.504 1.459 1 1-5/8 #8–32 PA5024DF150 54731 1.566 1.521 1 1-11/16 PA5025DF150 54732 1.629 1.584 1-1/16 1-3/4 PA5026DF150 54733 1.754 1.709 25/32 1-3/16 5/16 1-3/32 1-7/8 PA5028DF150 54734 1.880 1.835 1-3/16 2 PA5030DF150 54735 2.005 1.960 1-1/4 2-1/8 PA5032DF150 54736 2.130 2.085 1-3/8 2-1/4 PA5034DF150 54737 2.256 2.211 – – – 2.381 2.336 .3125 – – – 2.506 2.461 – – – 2.757 2.712 – – – 3.008 2.963 1-1/2 13/32 1-3/16 – – – 3.133 3.088 – – – 3.509 3.464 .375 – #10–32 – – 3.760 3.715 – – – 3.885 3,840 – – – 4.511 4.466 – – – Pitch O.D. Dia.
B
Face Width
C
D
L
Without Flanges Catalog Item Number Code PA5012NF150 54738 PA5013NF150 54739 PA5014NF150 54740 PA5015NF150 54741 PA5016NF150 54742 PA5017NF150 54743 PA5018NF150 54744 PA5019NF150 54745 PA5020NF150 54746 PA5022NF150 54747 PA5024NF150 54748 PA5025NF150 54749 PA5026NF150 54750 PA5028NF150 54751 PA5030NF150 54752 PA5032NF150 54753 PA5034NF150 54754 PA5036NF150 54755 PA5038NF150 54756 PA5040NF150 54757 PA5044NF150 54758 PA5048NF150 54759 PA5050NF150 54760 PA5056NF150 54761 PA5060NF150 54762 PA5062NF150 54763 PA5072NF150 54764
*Pulleys with 12 and13 grooves have one setscrew. All others have two at 90° †44-72 grooves, material is A356-T6 (cast).
132
Boston Gear 800-825-6544
P-1930-BG
04/10
Timing Belt Pulleys PL Series For 9mm Wide Belts 5mm Pitch; Lexan LEXAN – FIBERGLASS REINFORCED
DOUBLE FLANGE
SINGLE FLANGE
L
L FACE 3/16
O.D.
D
D
F.D. B
O.D.
C
F.D. B
C STANDARD TOLERANCES
Dimension Bore
3/16
All
Tolerances +.001 to –.000
FACE
ORDER BY CATALOG NUMBER OR ITEM CODE
Number of Grooves 11 12 13 14 15 16 17 18 19 20 22 25 28 29 30 40 50
Pitch Dia.
O.D.
.689 .752 .815 .877 .940 1.003 1.065 1.128 1.191 1.253 1.379 1.566 1.754 1.817 1.880 2.506 3.133
.644 .707 3/16 .770 .832 .895 .958 1.020 1.083 1/4 1.146 1.208 1.334 1.521 1.709 1.772 1.835 2.461 3.088 5/16
B
Face Width
C
11/16
D
L
3/4*
7/16
13/16 3/4
1/4
7/8 5/16
13/16*
Single Flange Flange Catalog Item Dia. Number Code .87 PL5011SF090 54765 .93 PL5012SF090 54766 .99 PL5013SF090 54767 1.06 PL5014SF090 54768 1.19 PL5015SF090 54769 1.19 PL5016SF090 54770 1.24 PL5017SF090 54771 1.31 PL5018SF090 54772 1.38 PL5019SF090 54773 1.44 PL5020SF090 54774 1.57 PL5022SF090 54775 1.76 PL5025SF090 54776 1.95 PL5028SF090 54777 2.02 PL5029SF090 54778 2.08 PL5030SF090 54779 2.71 PL5040SF090 54780 3.29 PL5050SF090 54781
Double Flange Catalog Item Number Code PL5011DF090 54782 PL5012DF090 54783 PL5013DF090 54784 PL5014DF090 54785 PL5015DF090 54786 PL5016DF090 54787 PL5017DF090 54788 PL5018DF090 54789 PL5019DF090 54790 PL5020DF090 54791 PL5022DF090 54792 PL5025DF090 54793 PL5028DF090 54794 PL5029DF090 54795 PL5030DF090 54796 PL5040DF090 54797 PL5050DF090 54798
*7/8” for Double Flange.
E
P-1930-BG
04/10
Boston Gear 800-825-6544
133
Timing Belt Pulleys PLB Series For 9mm Wide Belts 5mm Pitch; Lexan LEXAN – FIBERGLASS REINFORCED KNURLED ALUMINUM INSERTS COMPLETE WITH SETSCREWS
L 5 32
O.D.
STANDARD TOLERANCES Dimension Tolerance
Bore
All
SETSCREW L D 5 32
SETSCREW D
A C F.D.
O.D.
B
A C
F.D.
B 3 16
+.001 to –.000
FACE
SPOT DRILL
3 16 FACE
SPOT DRILL
ORDER BY CATALOG NUMBER OR ITEM CODE
Number Pitch O.D. of Dia. Grooves
E
11
.689
.644
12
.752
.707
13
.815
.770
14
.877
.832
15
.940
.895
16
1.003 .958
17
1.065 1.020
18
1.128 1.083
19
1.191 1.146
20
1.253 1.208
22
1.379 1.334
25
1.566 1.521
28
1.754 1.709
29
1.817 1.772
30
1.880 1.835
40
2.506 2.461
50
3.133 3.088
B 3/16 1/4 3/16 1/4 3/16 1/4 3/16 1/4 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 5/16 3/8 1/2 5/16 3/8 1/2
Face Width
7/16
Single Flange Flange SetItem Dia. screw* Catalog Number Code PLB5011SF09-3/16 54799 .87 PLB5011SF09-1/4 54800 PLB5012SF09-3/16 54801 .93 11/16 3/8 #6–32 PLB5012SF09-1/4 54802 PLB5013SF09-3/16 54803 .99 PLB5013SF09-1/4 54804 PLB5014SF09-3/16 54805 1.06 PLB5014SF09-1/4 54806 PLB5015SF09-1/4 54807 1.19 PLB5015SF09-5/16 54808 PLB5015SF09-3/8 54809 PLB5016SF09-1/4 54810 1.19 PLB5016SF09-5/16 54811 PLB5016SF09-3/8 54812 PLB5017SF09-1/4 54813 1.24 PLB5017SF09-5/16 54814 3/4 PLB5017SF09-3/8 54815 PLB5018SF09-1/4 54816 1.31 PLB5018SF09-5/16 54817 PLB5018SF09-3/8 54818 PLB5019SF09-1/4 54819 1/4 13/16 1.38 PLB5019SF09-5/16 54820 PLB5019SF09-3/8 54821 PLB5020SF09-1/4 54822 1/2 1.44 #8-32 PLB5020SF09-5/16 54823 PLB5020SF09-3/8 54824 PLB5022SF09-1/4 54825 1.57 PLB5022SF09-5/16 54826 PLB5022SF09-3/8 54827 PLB5025SF09-1/4 54828 1.76 PLB5025SF09-5/16 54829 PLB5025SF09-3/8 54830 PLB5028SF09-1/4 54831 1.95 PLB5028SF09-5/16 54832 PLB5028SF09-3/8 54833 PLB5029SF09-1/4 54834 7/8 2.02 PLB5029SF09-5/17 54835 PLB5029SF09-3/8 54836 PLB5030SF09-1/4 54837 2.08 PLB5030SF09-5/16 54838 PLB5030SF09-3/8 54839 PLB5040SF09-5/16 54840 2.71 PLB5040SF09-3/8 54841 5/16 5/8 13/16* #10–32 PLB5040SF09-1/2 54842 PLB5050SF09-5/16 54843 PLB5050SF09-3/8 54844 3.29 PLB5050SF09-1/2 54845 C
D Insert Dia.
L
Double Flanges Catalog Item Number Code PLB5011DF09-3/16 54846 PLB5011DF09-1/4 54847 PLB5012DF09-3/16 54848 PLB5012DF09-1/4 54849 PLB5013DF09-3/16 54850 PLB5013DF09-1/4 54851 PLB5014DF09-3/16 54852 PLB5014DF09-1/4 54853 PLB5015DF09-1/4 54854 PLB5015DF09-5/16 54855 PLB5015DF09-3/8 54856 PLB5016DF09-1/4 54857 PLB5016DF09-5/16 54858 PLB5016DF09-3/8 54859 PLB5017DF09-1/4 54860 PLB5017DF09-5/16 54861 PLB5017DF09-3/8 54862 PLB5018DF09-1/4 54863 PLB5018DF09-5/16 54864 PLB5018DF09-3/8 54865 PLB5019DF09-1/4 54866 PLB5019DF09-5/16 54867 PLB5019DF09-3/8 54868 PLB5020DF09-1/4 54869 PLB5020DF09-5/16 54870 PLB5020DF09-3/8 54871 PLB5022DF09-1/4 54872 PLB5022DF09-5/16 54873 PLB5022DF09-3/8 54874 PLB5025DF09-1/4 54875 PLB5025DF09-5/16 54876 PLB5025DF09-3/8 54877 PLB5028DF09-1/4 54878 PLB5028DF09-5/16 54879 PLB5028DF09-3/8 54880 PLB5029DF09-1/4 54881 PLB5029DF09-5/16 54882 PLB5029DF09-3/8 54883 PLB5030DF09-1/4 54884 PLB5030DF09-5/16 54885 PLB5030DF09-5/16 54886 PLB5040DF09-5/16 54887 PLB5040DF09-3/8 54888 PLB5040DF09-1/2 54889 PLB5050DF09-5/16 54890 PLB5050DF09-3/8 54891 PLB5050DF09-1/2 54892
†7/8” for Double Flange *No Flange
134
Boston Gear 800-825-6544
P-1930-BG
04/10
Bearings
Section Contents
F
BOST-BRONZ (OIL-IMPREGNATED SINTERED BRONZE) General Description .............................................................................................................136–137 Catalog Number Selections/Dimensions...........................................................................138–144 BEAR-N-BRONZ (660 CAST BRONZE) General Description .....................................................................................................................145 Catalog Number Selections/Dimensions...........................................................................146–153 BRONZE BEARING EMERGENCY BANK BOST-BRONZ & BEAR-N-BRONZ ..............................................................................................154 BOStonE F-1 (GLASS FILLED TEFLON) General Description/Engineering ...............................................................................................155 Catalog Number Selections/Dimensions...........................................................................156–157 RULON® 641 BEARINGS General Description .....................................................................................................................158 Catalog Number Selections/Dimensions...................................................................................159 BOStonE MOLDED PLASTIC General Description/Engineering ...............................................................................................160 Catalog Number Selections/Dimensions...........................................................................161–171 BOStonE MOLDED NYLON Catalog Number Selections/Dimensions...........................................................................172–173 Engineering Information ......................................................................................................174–182 ANTI-FRICTION (BALL BEARINGS) General Description .............................................................................................................183–184 Catalog Number Selections/Dimensions...........................................................................185–197 SELF-ALIGNING (ROD END & SPHERICAL BEARINGS) Catalog Number Selections/Dimensions...........................................................................198–206 Engineering...........................................................................................................................207–211 MOUNTED BEARINGS General Description .....................................................................................................................212 Replacement Bearings & Locking Collars .........................................................................213–214 Pillow Blocks .......................................................................................................................215–222 Flanged Units........................................................................................................................223–230 Shaft Supports .............................................................................................................................231 Take-Up Frames...........................................................................................................................232 ENGINEERING INFORMATION ....................................................................................................233–239
P-1930-BG
04/10
Boston Gear 800-825-6544
135
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings
F
BOST-BRONZ is Boston Gear’s all-purpose, oil-impregnated porous bronze bearing material. It is manufactured of highest purity metal powders by the powder metallurgy process. This process provides uniformly distributed pores between the metal particles which absorb oil by capillary action. BOSTBRONZ has a self-contained oil supply (approximately 20% by volume) which provides a uniform, protective film over the entire bearing surface. Composition and physical properties are as follows: – BOST-BRONZ can be used for production and replacement requirements in practically every known industry. It has proven to be efficient under heavy loads at moderate speeds and also under light loads at high speeds. It is ideally suited for applications where normal lubrication is difficult or impossible to provide. Coeifficent of Friction Static .1 - .3 Dynamic
Composition %
.02 - .04
The close tolerances of BOST-BRONZ bearings are made possible through expertly controlled manufacturing methods. In addition, the lubricating features of BOST-BRONZ permit reduced shaft clearances — a precision product with precision performance.
Performance Because of its porous construction, BOST-BRONZ bearings have an oil reservoir when idle — an oil film to start on — an oil film to run on, assuring low starting torque and smooth, quiet positive performance.
Adaptability BOST-BRONZ bearings are designed for immediate installation and may be used in most applications without additional machining. Oil holes or grooves are not required and turning or boring bearing diameters is normally unnecessary.
Density in Grams per Cu. Cent. Impregnated
Tensile Strength Lbs. per Sq. In.
Yield Strength in Compression (0.2% Offset) Lbs. per Sq. In.
Elongation in One Inch %
Porosity by Volume %
6.4/6.8
14,000
11,000
1.0
19 Min.
Copper (Cu) 87.5-90.5 Iron 1.0 Max. Lead (a) Carbon (Graphite Max.) 1.75 Max. Tin 9.5-10.5 Total Other Elements .05 (a) Included in other elements 136
Accuracy
Boston Gear 800-825-6544
Conforms to ASTM B438-73 Grade 1, Type 2, and SAE-841 Mil-B-5687C TYPE 1 comp A (Ref:Oil is a SAE 20-30 weight)
P-1930-BG
04/10
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Non-Listed Sizes
Applications
The stock sizes of BOST-BRONZ bearings listed in this catalog will satisfy the majority of industrial applications. Tooling is available for many metric and additional inch sizes. Where tooling is not available, special sizes can be made to order.
BOST-BRONZ bearings can be used on any application where the load-carrying capacity required falls within the capabilities of the material. BOST-BRONZ bearings operate efficiently under heavy loads at slow speeds. Because these bearings are supplied with oil impregnation, the original oil content provides long-lasting lubrication. For even longer life requirements, many applications incorporate impregnated felts or other reservoir techniques about the bearing.
Special Shapes Many special shapes can be made economically by the powdered metal process. This process is particularly economical for the production of comparatively simple shapes in large volume. More complicated shapes may also be economical to produce by this process when the savings in machining justify the cost of more expensive tooling.
Selection In general, sleeve bearings should be selected with a length of one to two times the shaft diameter and an O.D. approximately 25% larger than the shaft diameter. A general guide to determination of limiting load and velocity values for sleeve bearings has been established by the use of PV calculations. PV represents Pressure x Velocity, for example 100 psi x 20 fpm yields a PV of 2000. Maximum PV values for BOST-BRONZ bearings: Cylindrical & Flange Bearings - 50,000 Thrust Bearings - 10,000 For complete selection and application information, see Engineering Section, Pages 174-182.
Special Compositions In addition to our standard BOST-BRONZ, many special compositions can be furnished on a made-to-order basis.
P-1930-BG
04/10
Boston Gear 800-825-6544
137
F
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE Catalog Item Catalog A B C Number Code Number 1/8 B24-1 34504 3/8 B69-3 1/4 1/4 B24-2 34506 1/2 B69-4 .252 3/8 B24-3 34508 5/8 B69-5 9/16 1/8 1/2 B24-4 34510 3/4 B69-6 .5645 7/8 B69-7 .127 1/8 B25-1 34512 1 B69-8 1/4 B25-2 34514 5/16 1-14 B69-10 3/8 B25-3 34516 .315 1/2 B25-4 34518 3/8 B610-3 5/8 B25-5 34520 1/2 B610-4 3/8 5/8 B610-5 1/4 B34-2 34522 5/8 3/8 B34-3 34524 .377 3/4 B610-6 1/4 .627 1/2 B34-4 34526 7/8 B610-7 .252 5/8 B34-5 34528 1 B610-8 3/4 B34-6 34530 1-1/4 B610-10 1/4 B35-2 34532 3/8 B612-3 3/16 3/8 B35-3 34534 1/2 B612-4 5/16 3/4 .189 1/2 B35-4 34536 3/4 B612-6 .314 .753 5/8 B35-5 34538 1 B612-8 3/4 B35-6 34540 1-1/4 B612-10 3/8 B36-3 13561 3/8 B79-3 3/8 1/2 B36-4 13563 1/2 B79-4 .377 5/8 B36-5 13565 5/8 B79-5 9/16 3/4 B36-6 13567 3/4 B79-6 .5645 1/4 B45-2 13569 7/8 B79-7 5/16 3/8 B45-3 13571 1 B79-8 .315 1/2 B45-4 13573 1-1/4 B79-10 3/4 B45-6 13575 7/16 3/8 B710-3 1/4 B46-2 34542 .439 1/2 B710-4 1 5/16 B46-2 /2 34544 5/8 B710-5 5/8 3/8 B46-3 34546 3/4 B710-6 .628 1/2 B46-4 34548 7/8 B710-7 3/8 5/8 B46-5 34550 1 B710-8 .377 3/4 B46-6 34552 1-1/4 B710-10 7/8 B46-7 34554 1/2 B711-4 1 B46-8 34556 11/16 1 B711-8 1/4 1-1/4 B46-10 34558 .690 1-1/2 B711-12 .252 3/8 B47-3 34560 1/2 B810-4 1/2 B47-4 34562 5/8 B810-5 7/16 5/8 B47-5 34564 3/4 B810-6 .439 3/4 B47-6 34566 5/8 7/8 B810-7 7/8 B47-7 34568 .628 1 B810-8 1 B47-8 34570 1-1/8 B810-9 3/8 B48-3 34572 1-1/4 B810-10 1/2 B48-4 34574 1-1/2 B810-12 5/8 B48-5 34576 1/2 1/2 B811-4 3/4 B48-6 34578 .502 7/8 B48-7 34580 5/8 B811-5 1 B48-8 34582 3/4 B811-6 1-1/4 B48-10 34584 11/16 7/8 B811-7 .690 1 B811-8 3/8 B56-3 34586 1-1/8 B811-9 1/2 B56-4 34588 1-1/4 B811-10 3/8 5/8 B56-5 34590 1-1/2 B811-12 .377 3/4 B56-6 34592 7/8 B56-7 34594 1/2 B812-4 1 B56-8 34596 5/8 B812-5 3/4 B812-6 1/4 B57-2 34598 3/8 B57-3 34600 7/8 B812-7 1/2 B57-4 34602 1/2 3/4 1 B812-8 5/16 5/8 B57-5 34604 .503 .753 1-1/8 B812-9 7/16 .314 3/4 B57-6 34606 1-1/4 B812-10 .439 7/8 B57-7 34608 1-1/2 B812-12 1 B57-8 34610 1-3/4 B812-14 1-1/4 B57-10 34612 2 B812-16 1-3/8 B57-11 34614 1/2 B813-4 3/8 B58-3 34616 13/16 3/4 B813-6 1/2 B58-4 34618 .815 1 B813-8 5/8 B58-5 34620 1-1/2 B813-12 3/4 B58-6 34622 1/2 1/2 B814-4 7/8 B58-7 34624 .502 5/8 B814-5 1 B58-8 34626 3/4 B814-6 1-1/4 B58-10 34628 7/8 7/8 B814-7 1-1/2 B58-12 34630 .878 1 B814-8 1-3/4 B58-14 34632 1-1/4 B814-10 1/2 B67-4 13577 1-1/2 B814-12 7/16 5/8 B67-5 13579 3/4 B816-6 .440 3/4 B67-6 13581 1 1 B816-8 1 B67-8 13583 1.004 1-1/2 B816-12 3/8 B68-3 34634 3/8 2 B816-16 1/2 B68-4 34636 .377 1/2 B911-4 5/8 B68-5 34638 1/2 9/16 11/16 3/4 B911-6 3/4 B68-6 34640 .502 .565 .690 1 B911-8 7/8 B68-7 34642 1-1/2 B911-12 1 B68-8 34644 1-1/4 B68-10 34646 On A and B dimensions, tolerances apply to actual (decimal) dimensions. A
F
B
A
C
STANDARD TOLERANCES
Dimensions 1/8 – 1 1/2 A 1 3/4 – 2 1/2 B 2 3/4 - 3 1/2 1/8 – 1-1/2 C 1 3/4 – 3 4
Tolerance +.000, – .001 +.000, – .0015 +.000,– .002 ± .005 ± .0075 ± .010
CONCENTRICITY
Dimensions 1/8 – 1 1/2 A 1 5/8 – 3 3 1/4 – 3 1/2
Tolerance .003 .004 .005
Prices on unlisted sizes and other Boston Gear powder metal parts provided on request.
138
Boston Gear 800-825-6544
B
C
P-1930-BG
Item Code 34648 34650 34652 34654 34656 34658 34660 34676 34678 34680 34682 34684 34686 34688 34690 34692 34694 34696 34698 34662 34664 34666 34668 34670 34672 34674 34700 34702 34704 34706 34708 34710 34712 34714 34716 34718 34720 34722 34724 34726 34728 34730 34732 34734 34736 34738 34740 34742 34744 34746 34748 34750 34752 34754 34756 34758 34760 34762 34764 34766 34768 34770 34772 34774 34776 34778 34780 34782 34784 34786 34788 34790 34792 13585 13587 13589 13591 34794 34796 34798 34800
04/10
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B 3/4 .753
9/16 .565 13/16 .815
3/4 .753
5/8 .627
13/16 .815
7/8 .878
5/8 .628
11/16 .690
1 1.003
7/8 .878
7/8 .878
15/16 .9405 3/4 .753
1 1.003
C 1/2 3/4 1 1-1/2 1/2 3/4 1 1-1/4 1-1/2 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-1/2 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-3/4 2 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-3/4 2 3/4 1 1-1/4 1-1/2 1-3/4 2 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-5/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-3/4 2 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-1/2 1-3/4 2 2-1/2
Catalog Number B912-4 B912-6 B912-8 B912-12 B913-4 B913-6 B913-8 B913-10 B913-12 B1012-4 B1012-5 B1012-6 B1012-7 B1012-8 B1012-9 B1012-10 B1012-12 B1013-4 B1013-5 B1013-6 B1013-7 B1013-8 B1013-10 B1013-12 B1013-16 B1014-5 B1014-6 B1014-7 B1014-8 B1014-10 B1014-12 B1014-14 B1014-16 B1016-4 B1016-5 B1016-6 B1016-7 B1016-8 B1016-10 B1016-12 B1016-14 B1016-16 B1114-6 B1114-8 B1114-10 B1114-12 B1114-14 B1114-16 B1214-4 B1214-5 B1214-6 B1214-7 B1214-8 B1214-10 B1214-12 B1214-13 B1215-4 B1215-5 B1215-6 B1215-7 B1215-8 B1215-10 B1215-12 B1215-14 B1215-16 B1216-4 B1216-5 B1216-6 B1216-7 B1216-8 B1216-9 B1216-10 B1216-12 B1216-14 B1216-16 B1216-20
Item Code 34802 34804 34806 34808 34810 34812 34814 34816 34818 34820 34822 34824 34826 34828 34830 34834 34832 34836 34838 34840 35400 34842 34844 34846 34848 34850 34852 34854 34856 34858 34860 34862 34864 34866 34868 34870 34872 34874 34876 34878 34880 34882 34884 34886 34888 34890 34892 34894 34896 34898 34900 34902 34904 34906 34908 34910 34912 34914 34916 34918 34920 34922 34924 34926 34928 34930 34932 34934 34936 34938 34940 34942 34944 34946 34948 34950
A
B
1-1/8 1.128 3/4 .753
1-1/4 1.253
13/16 .8155
1 1.003
1 1.003
7/8 .878
1-1/8 1.128
1-1/4 1.253
1-3/16 1.1905 15/16 .9405 1-1/4 1.253
1-1/8 1.128
1-3/16 1.190
1 1.004
1-1/4 1.253
1-5/16 1.3155
C 1/2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 7/8 1 1-1/4 1-1/2 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/2 3/4 1 1-1/4 1-1/2 2 3/4 1 1-1/4 1-1/2 2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 1 1-1/4 1-1/2 1-3/4 2 3/4 7/8 1 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 3 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3
Catalog Number B1218-4 B1218-6 B1218-8 B1218-10 B1218-12 B1218-14 B1218-16 B1220-6 B1220-8 B1220-10 B1220-12 B1220-14 B1220-16 B1316-6 B1316-8 B1316-10 B1316-12 B1316-14 B1316-16 B1416-6 B1416-7 B1416-8 B1416-10 B1416-12 B1418-6 B1418-7 B1418-8 B1418-9 B1418-10 B1418-11 B1418-12 B1418-14 B1418-16 B1418-20 B1420-6 B1420-8 B1420-10 B1420-12 B1420-16 B1519-6 B1519-8 B1519-10 B1519-12 B1519-16 B1520-6 B1520-8 B1520-10 B1520-12 B1520-14 B1520-16 B1618-6 B1618-8 B1618-10 B1618-12 B1618-14 B1618-16 B1619-6 B1619-8 B1619-10 B1619-12 B1619-14 B1619-16 B1620-6 B1620-7 B1620-8 B1620-10 B1620-11 B1620-12 B1620-14 B1620-16 B1620-18 B1620-20 B1620-24 B1621-8 B1621-10 B1621-12 B1621-14 B1621-16 B1621-20 B1621-24
Item Code 34952 34954 34956 34958 34960 34962 34964 34966 34968 34970 34972 34974 34976 34978 34980 34982 34984 34986 34988 34990 34992 34994 34996 34998 35000 35002 35004 35006 35008 35010 35012 35014 35016 35018 35020 35022 35024 35026 35028 35030 35032 35034 35036 35038 35040 35042 35044 35046 35048 35050 35052 35054 35056 35058 35060 35062 13593 13595 13597 13599 13601 13603 35064 35066 35068 35070 35072 35074 35076 35078 35080 35082 35084 35086 35088 35090 35092 35094 35096 35098
F
B
A
C
STANDARD TOLERANCES
Dimensions A 1/8 – 1 1/2 1 3/4 – 2 1/2 B 2 3/4 – 3 1/2 1/8 – 1 1/2 C 1 3/4 – 3 4
Tolerance +.000, – .001 +.000, – .0015 +.000, – .002 ± .005 ± .0075 ± .010
CONCENTRICITY
Dimensions 1/8 – 1 1/2 1 5/8 – 3 3 1/4 – 3 1/2
A
Tolerance .003 .004 .005
Prices on unlisted sizes and other Boston Gear powder metal parts provided on request.
On A and B dimensions, tolerances apply to actual (decimal) dimensions. P-1930-BG
04/10
Boston Gear 800-825-6544
139
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B
1-3/8 1.378
F
1 1.003 1-1/2 1.503
1-1/16 1-5/16 1.0655 1.3155 1-1/4 1.254 1-5/16 1.3155
B
1-1/8 1.129
A
1-3/8 1.378
1-1/2 1.503
C
1-7/16 1.441
STANDARD TOLERANCES
Dimensions A 1/8 – 1 1/2 1 3/4 – 2 1/2 B 2 3/4 – 3 1/2 1/8 – 11/2 C 1 3/4 – 3 4
Tolerance +.000, – .001 +.000, – .0015 +.000, – .002 ± .005 ± .0075 ± .010
1-3/16 1.1905
1-1/2 1.503
1-1/2 1.503 1-1/4 1.254
CONCENTRICITY
Dimensions A 1/-8 – 1 1/2 1 5/8 – 3 3 1/4 – 3 1/2
1-5/8 1.628
Tolerance .003 .004 .005
Prices on unlisted sizes and other Boston Gear powder metal parts provided on request.
1-5/16 1.3155
1-5/8 1.628
1-5/8 1.628 1-3/8 1.378 1-3/4 1.753
C 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3 1 1-1/4 1-1/2 2 2-1/2 3 1 1-1/2 2 2-1/2 1 1-1/4 1-1/2 1 1-1/4 1-1/2 2 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3 1 1-1/2 2 1-1/4 2 2-1/2 3 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2 2-1/4 2-1/2 3 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3 1-1/4 1-1/2 2 2-1/2 3 1 1-1/2 2 2-1/2 3 1 1-1/2 2 2-1/2 3
Catalog Number B1622-8 B1622-10 B1622-12 B1622-14 B1622-16 B1622-20 B1622-24 B1624-8 B1624-10 B1624-12 B1624-16 B1624-20 B1624-24 B1721-8 B1721-12 B1721-16 B1721-20 B1820-8 B1820-10 B1820-12 B1821-8 B1821-10 B1821-12 B1821-16 B1822-6 B1822-8 B1822-10 B1822-12 B1822-14 B1822-16 B1822-20 B1822-24 B1824-8 B1824-12 B1824-16 B1923-10 B1923-16 B1923-20 B1923-24 B1924-8 B1924-10 B1924-12 B1924-14 B1924-16 B1924-20 B1924-24 B2024-8 B2024-9 B2024-10 B2024-11 B2024-12 B2024-13 B2024-14 B2024-16 B2024-18 B2024-20 B2024-24 B2026-8 B2026-10 B2026-12 B2026-14 B2026-16 B2026-20 B2026-24 B2126-10 B2126-12 B2126-16 B2126-20 B2126-24 B2226-8 B2226-12 B2226-16 B2226-20 B2226-24 B2228-8 B2228-12 B2228-16 B2228-20 B2228-24
Item Code 35100 35102 35104 35106 35108 35110 35112 35114 35116 35118 35120 35122 35124 35126 35128 35130 35132 13605 13639 13641 35134 35136 35138 35140 35142 35144 35146 35148 35150 35152 35154 35156 35158 35160 35162 35164 35166 35168 35170 35172 35174 35716 35178 35180 35182 35184 35186 35188 35190 35192 35194 35196 35198 35200 35202 35204 35206 35208 35210 35212 35214 35216 35218 35220 35222 35224 35226 35228 35230 35232 35234 35236 35238 35240 35242 35244 35246 35248 35250
A
1-7/16 1.4405
B
1-3/4 1.753
1-3/4 1.753 1-13/16 1.816 1-1/2 1.503
1-7/8 1.878 2 2.004
1-7/8 1.878 1-5/8 1.628 2 2.004 1-11/16 2-3/16 1.6905 2.191
1-3/4 1.753
2 2.004 2-1/8 2.129
1-15/16 2-5/16 1.9405 2.316
2 2.003
2-3/8 2.379 2-1/2 2.504
2-1/4 2.254
2-3/4 2.754
2-3/8 2.379
2-3/4 2.754
2-1/2 2.504
3 3.005
2-3/4 2.755
3-1/4 3.255
3 3.004
3-1/2 3.505
C 1 1-1/4 1-1/2 1-3/4 2 2-1/2 3 1 1-1/4 1-1/2 2 2-1/2 3 1-1/2 3 1-1/2 2 2-1/2 3 1 1-1/2 2 2-1/2 3 1-1/4 1-1/2 2 2-1/2 3 1 2 3 1-3/4 2 3 4 2 2-1/2 3 1-1/2 2 3 2 3 4 1-3/4 2 2-3/4 3 4 1 2 3 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4
Catalog Number B2328-8 B2328-10 B2328-12 B2328-14 B2328-16 B2328-20 B2328-24 B2428-8 B2428-10 B2428-12 B2428-16 B2428-20 B2428-24 B2429-12 B2429-24 B2430-12 B2430-16 B2430-20 B2430-24 B2432-8 B2432-12 B2432-16 B2432-20 B2432-24 B2630-10 B2630-12 B2630-16 B2630-20 B2630-24 B2632-8 B2632-16 B2632-24 B2735-14 B2735-16 B2735-24 B2735-32 B2832-16 B2832-20 B2832-24 B2834-12 B2834-16 B2834-24 B3137-16 B3137-24 B3137-32 B3238-14 B3238-16 B3238-22 B3238-24 B3238-32 B3240-8 B3240-16 B3240-24 B3644-16 B3644-24 B3644-32 B3844-16 B3844-24 B3844-32 B4048-16 B4048-24 B4048-32 B4452-16 B4452-24 B4452-32 B4856-16 B4856-24 B4856-32
Item Code 35252 35254 35256 35258 35260 35262 35264 35266 35268 35270 35272 35274 35276 35278 35280 35282 35284 35286 35288 35290 35292 35294 35296 35298 35300 35302 35304 35306 35308 35310 35312 35314 35316 35318 35320 35322 35324 35326 35328 35330 35332 35334 35336 35338 35340 35342 35344 35346 35348 35350 35352 35354 35356 35364 35366 35368 35370 35372 35374 35382 35384 35386 35388 35390 35392 35394 35396 35398
On A and B dimensions, tolerances apply to actual (decimal) dimensions.
140
Boston Gear 800-825-6544
P-1930-BG
04/10
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Flanged Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B
C
D
E
1/8 .127
5/16 .315
.375
3/64
3/16 .189
5/16 .3145
.375
3/64
1/4 .252
3/8 .377
1/4 3/8 1/8 1/4 3/8 1/4 3/8 1/2 5/8 3/4
.500
3/64
3/8
.500
3/64
3/8 .377
5/16 .314
7/16 .439
1/2 .502
1/2 .502
3/8 .377
9/16 .5645
5/8 .627
3/4 .753 9/16 .565 7/16 .439
5/8 .628
5/8 .628
1/2 .502
11/16 .690
3/4 .753
9/16 .565
3/4 .753
3/8 1/2 5/8 3/4 7/8 1 3/8 1/2 5/8 3/8 13/32 1/2 5/8 3/4 7/8 1 1-1/4 1/2 3/4 1-1/4 3/8 1/2 5/8 3/4 1 1-1/4 1/2 1/2 5/8 3/4 5/8 3/4 1-1/4 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-3/4 1/2 5/8 3/4 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1/2 3/4 1
.625
.688
.688
3/32
3/32
3/32
.750
1/8
.875
1/8
1.000
1/8
.688
1/16
.875
1/8
.875
1/8
.938
1/8
1.000
1/8
1.000
1/8
Catalog Number FB25-2 FB25-3 FB35-1 FB35-2 FB35-3 FB46-2 FB46-3 FB46-4 FB46-5 FB46-6
Item Code 35516 35518 35520 35522 35524 35526 35528 35530 35532 35534
FB56-3
35536
FB57-3 FB57-4 FB57-5 FB57-6 FB57-7 FB57-8 FB58-3 FB58-4 FB58-5 FB68-3 FB68-3 1/4 FB68-4 FB68-5 FB68-6 FB68-7 FB68-8 FB68-10 FB69-4 FB69-6 FB69-10 FB610-3 FB610-4 FB610-5 FB610-6 FB610-8 FB610-10
35538 69191 69192 35540 69193 69194 35542 35544 35546 35548 35550 35552 35554 35556 69195 35558 35560 69196 35562 35564 69197 35566 39198 35568 69199 35570
FB612-4
35572
FB79-4 FB79-5 FB79-6 FB710-5 FB710-6 FB710-10 FB810-4 FB810-5 FB810-6 FB810-7 FB810-8 FB810-10 FB810-12 FB810-14 FB811-4 FB811-5 FB811-6 FB812-4 FB812-5 FB812-6 FB812-7 FB812-8 FB812-10 FB812-12 FB912-4 FB912-6 FB912-8
13611 13613 13615 35574 69200 35576 35578 35580 35582 69201 35584 35586 35588 35590 35592 69202 35594 35596 69203 35598 35600 35602 35604 35606 69204 69205 35608
F
.020 RADIUS MAX.
B
D
A
E C
STANDARD TOLERANCES
A B C D
E
Dimensions 1/8 – 1 1/2 1 3/4 – 2 1/2 2 3/4 – 3 1/2 1/8 – 1 1⁄2 1 3⁄4 – 3 4 3/8 – 1 1/4 1 3/8 – 2 1/2 4
Tolerance +.000, – .001 +.000, – .0015 +.000, – .002 ± .005 ± .0075 ± .010 ±.005 ±.010 ±.015
3/8 – 1 1/4 1 3/8 – 2 1/2 4
±.0025 ±.005 ±.010
CONCENTRICITY
Dimensions A 1/8 - 1 1/2 1 5/8 - 3 3 1/4 - 3 1/2
Tolerance .003 .004 .005
Prices on unlisted sizes and other Boston Gear powder metal parts provided on request.
On A and B dimensions, tolerances apply to actual (decimal) dimensions.
P-1930-BG
04/10
Boston Gear 800-825-6544
141
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Flanged Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
F
A
B
5/8 .626
3/4 .753
13/16 .815 5/8 .627 7/8 .878 1 1.003
.020 RADIUS MAX.
7/8 .878 B
D
A
3/4 .752
E
1 1.003
C
STANDARD TOLERANCES
A B C
D
E
Dimensions 1/8 – 1 1/2 1 3/4 – 2 1/2 2 3/4 – 3 1/2 1/8 – 1 1⁄2 1 3/4 – 3 4 3/8 – 1 1/4 1 3/8 – 2 1/2 4 3/8 – 1 1/4 1 3/8 – 2 1/2 4
Tolerance +.000, – .001 +.000, – .0015 +.000, – .002 ± .005 ± .0075 ± .010 ± .005 ± .010 ± .015 ± .0025 ± .005 ± .010
CONCENTRICITY
Dimensions 1/8 – 1 1/2 A 1 5/8 – 3 3 1/4 – 3 1/2
Tolerance .003 .004 .005
Prices on unlisted sizes and other Boston Gear powder metal parts provided on request.
15/16 .940
7/8 .877
1 1.002
1 1.003 1-1/8 1.128
1-1/4 1.253
1-3/8 1.378
C
Catalog Number FB1012-4 FB1012-5 FB1012-6 FB1012-8 FB1012-10 FB1013-5 FB1013-6 FB1013-8 FB1013-10 FB1013-11 1/2 FB1013-12 FB1013-16 FB1014-5 FB1014-6 FB1014-8 FB1014-14 FB1016-6 FB1016-8 FB1214-6 FB1214-8 FB1214-10 FB1215-8 FB1215-10 FB1215-12 FB1216-5 FB1216-6 FB1216-8 FB1216-10 FB1216-12 FB1216-16 FB1416-6 FB1416-8 FB1416-10 FB1418-8 FB1418-10 FB1418-12 FB1620-6 FB1620-8 FB1620-10 FB1620-12 FB1620-16 FB1622-8 FB1622-12 FB1622-14 FB1822-6 FB1822-8 FB1822-10 FB2024-8 FB2024-10 FB2024-12 FB2226-6 FB2226-8
Item Code 35610 35612 35614 35616 35618 69206 35620 35622 35624 35626 35628 35630 69207 35632 35634 35636 69208 35638 35644 35646 69209 35648 69213 35650 69214 35652 35654 35656 35658 35660 35662 69210 35664 35666 69211 35668 35672 35674 35676 35678 35680 35682 69215 35684 13617 13619 13621 69216 35686 69217 13623 13625
3/16
FB2428-12
35688
D
E
1.000
1/8
1.063
5/32
1.125
5/32
1.250
5/32
1.125
5/32
1.188
5/32
1.250
5/32
1.250
5/32
1.375
5/32
1.500
3/16
1.625
3/16
1.750
1/8
1.750
3/16
2,000
1/8
1-1/2
2.063
1/2 5/8 3/4 1 1-1/4 5/8 3/4 1 1-1/4 1-7/16 1-1/2 2 5/8 3/4 1 1-3/4 3/4 1 3/4 1 1-1/4 1 1-1/4 1-1/2 5/8 3/4 1 1-1/4 1-1/2 2 3/4 1 1-1/4 1 1-1/4 1-1/2 3/4 1 1-1/4 1-1/2 2 1 1-1/2 1-3/4 3/4 1 1-1/4 1 1-1/4 1-1/2 3/4 1
1-1/8 1.127
1-3/8 1.377
1-1/4 1.252
1-1/2 1.503
1-3/8 1.377 1-1/2 1.503
1-5/8 1.628 1-3/4 1.754
2 2.003
2-1/4 2.254
3/4 1 1-1/4
2.500
1/8
FB3236-6 FB3236-8 FB3236-10
13627 13629 13631
2-3/4 2.752
3-1/4 3.255
1-1/2
4.000
3/16
FB4452-12
13635
On A and B dimensions, tolerances apply to actual (decimal) dimensions.
142
Boston Gear 800-825-6544
P-1930-BG
04/10
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Thrust Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B 7/16 .4375 1/2 .500 5/8 .625 5/8 .625 3/4 .750 5/8 .625 3/4 .750 3/4 .750 3/4 .750 3/4 .750 7/8 .875 1 1.000 1-1/4 1.250 1 1.000 1-3/16 1.187 1-1/4 1.250 1-1/2 1.500 1-1/4 1.250 1-3/8 1.375
1/4 .255
5/16 .315 3/8 .385 3/8 .380 7/16 .440 1/2 .505 1/2 .505 1/2 .510 9/16 .565 5/8 .628 5/8 .6265 3/4 .753
Catalog Number
Item Code
A
1/16
TB47
13515
3/4 .765
1/16
TB48
13517
C
1/16
TB410
35766
1/16
TB510
13519
1/16
TB512
35768
1/16
TB610
13521
1/32
TB612
35770
1/8
TB612-2
13523
1/16
TB712
69218
1/16
TB812
35772
3/16
TB814
35774
1/16
TB816
35776
1/8
TB920
35778
1/8
TB1016
35780
3/32
TB1019
35782
1/8
TB1020
69219
1/8
TB1024
69220
1/8
TB1220
69221
1/8
TB1222
69222
7/8 .8905 7/8 .880 7/8 .8905 1 1.003 1 1.0155 1 1.0120 1 1.016 1 1.0155 1-1/8 1.140 1-1/4 1.253 1-1/4 1.265 1-1/9 1.255 1-3/8 1.379 1-1/2 1.503 1-1/2 1.505 1-1/2 1.510 1-9/16 1.578 1-3/4 1.765 2 2.011 2 2.031 2-1/16 2.062 2-1/2 2.502
On A and B dimensions, tolerances apply to actual (decimal) dimensions.
BOST-BRONZ is stocked in this convenient Plate form for ease in machining to required bearing size or shape — at your service for all emergencies.
B
C
Catalog Number
Item Code
1-9/16 1.562 1-3/4 1.750 1-1/2 1.500 2 2.000 2-1/8 2.125 1-1/2 1.504 1-1/2 1.500 1-5/8 1.625 1-3/4 1.750 2 2.000 2-7/8 2.875 1-7/8 1.875 1-3/4 1.750 2 2.000 2-3/8 2.375 3-5/16 3.312 1-15/16 1.940 2 2.000 2-1/2 2.505 3-1/2 3.500 2-7/16 2.4375 2-5/8 2.625 3 3.000 3-5/8 2.625 4 4.000 3-1/4 3.250
3/32
TB1225
35784
1/8
TB1228
35786
1/8
TB1424
35788
1/8
TB1432
13525
1/8
TB1434
35790
1/8
TB1624
35792
3/16
TB1624-3
13527
1/4
TB1626-4
13529
1/8
TB1628
13531
1/8
TB1632
35794
1/8
TB1646
13533
1/8
TB1830
13535
1/8
TB2028
35796
1/8
TB2032
13537
1/8
TB2038
13539
1/8
TB2053
13541
1/8
TB2231
13543
1/8
TB2432
13545
1/8
TB2440
13547
3/16
TB2456
35798
1/8
TB2539
13549
1/8
TB2842
13551
1/4
TB3248
13553
3/16
TB3258
13555
1/8
TB3364
13557
1/8
TB4052
13559
F
B
A
C
STANDARD TOLERANCES
Dimensions 1/4 – 1 1/4 A 1 3/8 –2 1/2 7/16 – 1 1/2 B 1 9/16 – 3 3 1/4 – 4 C All
Tolerance ±.010 ±.015 ±.010 ±.015 ±.020 ± .0025
Plate Stock
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A 1/8 3/16 1/4 5/16 3/8 1/2 5/8 3/4 1 3/16 1/4
B
C
5
6
5
6
5
8
Catalog Number PB5602 PB5603 PB5604 PB5605 PB5606 PB5608 PB5610 PB5612 PB5616 PB5803 PB5804
Item Code 35692 35694 35696 35698 35700 35702 35704 35706 35708 35710 35712
Keep BOST-BRONZ plate stock on hand for: Breakdowns – maintenance and repairs – Producing small lots of special sizes – Experimental and development work. P-1930-BG
04/10
A
B
C
STANDARD TOLERANCES
Dimensions A All
Tolerance ±.010 to –.005
Boston Gear 800-825-6544
143
BOST-BRONZ Oil-Impregnated Sintered Bronze Bearings Cored Bars BOST-BRONZ is stocked in these convenient Bar forms for ease in machining to required bearing size or shape — at your service for all emergencies. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
F
A
B 1 1-1/4 1-1/2 1 1-1/4 1-3/8 1-1/2 1-3/4 1-1/4 1-1/2 1-3/4 2 2-1/2 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 3 1-3/4 2 2-1/4 2-1/2 3 2 2 2-1/4 2-1/2 3 3-1/2
1/2
5/8
3/4 7/8
B
A
1
1-1/4 STANDARD TOLERANCES
Dimensions A All B All
Tolerance –1/8” +1/8”
1-3/8 1-1/2
Solid Bars
STANDARD TOLERANCES
144
Item Code 35402 35404 35406 35408 35410 35412 35414 35416 35418 35420 35422 35424 35426 35428 35430 35432 35434 35436 35438 35440 35442 35444 35446 35448 35450 35452 35456 35458 35460 35462 35464
A
B 2-1/4 2-1/2 2-3/4 3 3-1/2 2-3/4 3 3-1/4 4 4-1/2 5 3 3-1/2 3-3/4 3 3-1/2 3-3/4 4 5 6 4-3/4 6 7
1-3/4
2
2-1/4 2-3/8 2-1/2 3 3-1/2 4 5
Catalog Number CB2836 CB2840 CB2844 CB2848 CB2856 CB3244 CB3248 CB3252 CB3264 CB3272 CB3280 CB3648 CB3656 CB3660 CB3848 CB4056 CB4860 CB4864 CB4880 CB4896 CB5676 CB6496 CB80112
Item Code 35466 35468 35470 35472 35474 35476 35478 35480 35482 35484 35486 35488 35490 35492 35494 35496 35498 35500 35502 35504 35506 35512 35514
All bars are 6 1/2" long.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
B
Dimensions B All
Catalog Number CB816 CB820 CB824 CB1016 CB1020 CB1022 CB1024 CB1028 CB1220 CB1224 CB1228 CB1232 CB1240 CB1422 CB1624 CB1628 CB1632 CB1636 CB1640 CB1648 CB2028 CB2032 CB2036 CB2040 CB2048 CB2232 CB2432 CB2436 CB2440 CB2448 CB2456
Tolerance + 1/8”
Boston Gear 800-825-6544
B
Length
1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2 2-1/4 2-1/2 3 3-1/2 4 4-1/2 5 5-1/2 6 7 8
2 3 6-1/2
6-1/2
6-1/2
6-1/2
6-1/2
6-1/2
Catalog Number SB4 SB6 SB8 SB10 SB12 SB14 SB16 SB18 SB20 SB22 SB24 SB26 SB28 SB32 SB36 SB40 SB48 SB56 SB64 SB72 SB80 SB88 SB96 SB112 SB128
Item Code 35714 35716 35718 35720 35722 35724 35726 35728 35730 35732 35734 35736 35738 35742 35744 35746 35748 35750 35752 35754 35756 35758 35760 35762 35764
P-1930-BG
04/10
BEAR-N-BRONZE 660 Cast Bronze Bearings
F
Adaptability BEAR-N-BRONZ bearings are completely machined to close tolerances permitting wider housing-bore tolerances. BEAR-NBRONZ bars are machined all over.
Composition (%)
Copper (Cu) Tin (Sn) Lead (Pb) Zinc (Zn)
83 7 7 3
Avg. Avg. Yield ElongaBrinnell Tensile Strength tion in Hardness Strength 0.2% Two Inch (500 Kg (Lbs. Per Offset (%) Load) Sq. In.) (Lbs. Per Sq. In.) 35,000 20,000 15 60 Bear-N-Bronz conforms to SAE CA932 (660) and ASTM B584-78 (alloy C93200) specifications.
Special Compositions In addition to our standard BEAR-N-BRONZ (SAE CA 932) material, many special compositions can be furnished on a madeto-order basis.
Average Yield Strength 0.2% Offset (Lbs. Per Sq. In.) Average Tensile Strength (Lbs. Per Sq. In.) Elongation in Two Inch (%) Brinnell Hardness (500 Kg Load)
206 Leaded Gun Metal
CA927
Copper (Cu) 88 Tin (Sn) 1040,00020,000 Lead (Pb) 2
210 Gun Metal
CA905
Copper (Cu) 88 Tin (Sn) 10 Zinc (Zn) 2
305 Phosphor Bronze
CA937
319 Semi-Plastic Bronze
CA938
Composition (%)
BEAR-N-BRONZ is chemically and metallurgically tested to assure conformance to specifications. All parts are rigidly inspected to assure freedom from porosity and conformance to dimensional tolerances.
Equivalent S.A.E. Number
Quality
The Chemical compositions and physical properties of some of the more popular are listed.
Grade
BEAR-N-BRONZ is Boston Gear’s general purpose cast, solid bronze bearing material. It is a high grade, leaded-tin bronze, having good hardness, strength, wear-resistance, and exceptional anti-friction qualities. It is particularly suited for moderate to heavy loads at normal to relatively high speeds.
25
70
45,000
22,000
25
65
Copper (Cu) 80 Tin (Sn) 10 Lead (Pb) 10
35,000
18,000
20
63
Copper (Cu) 78 Tin (Sn) 7 Lead (Pb) 15
30,000
17,000
15
55
Selection In general, sleeve bearings should be selected with a length of one to two times the shaft diameter and an O.D. approximately 25% larger than the shaft diameter. A general guide to determination of limiting load and velocity values for sleeve bearings has been established by the use of PV calculations. PV represents Pressure x Velocity, for example 100 psi x 20 fpm yields a PV of 2000. Maximum PV value for BEAR-N-BRONZ bearings: 75,000. For complete selection and application information, see Engineering Section, Pages 174-182.
P-1930-BG
04/10
Boston Gear 800-825-6544
145
BEAR-N-BRONZE 660 Cast Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B
3/16
5/16
F
3/8 1/4 7/16 7/16 5/16 1/2
1/2 B
A
3/8
9/16
5/8 C
9/16
5/8 7/16 11/16 3/4 13/16 STANDARD TOLERANCES
Dimensions 3/16 – 3 A 3-1/4 – 4-1/2 5/16 – 3 B 3-1/8 – 5 C All
Tolerance ±.001 ±.0015 +.002 to +.003 +.003 to +.005 ±.005
5/8
11/16
STANDARD CONCENTRICITY
Dimensions A All
T.I.R. (A to B) .003
For Oil Grooves see Page 179.
1/2
3/4
13/16
7/8 1
146
Boston Gear 800-825-6544
C 1/2 3/4 1 3/4 1 1-1/4 3/4 1 1-1/4 3/4 1 1-1/4 3/4 1 1-1/4 3/4 1 1-1/4 1-1/2 3/4 1 1-1/4 3/4 1 1-1/4 1-1/2 1 1-1/4 1-1/2 1 1-1/4 1-1/2 2 1-1/2 1 1-1/4 1-1/2 1-1/2 5/8 3/4 7/8 1 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/4 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 1 1-1/2 2-1/4 1 1-1/4 1-1/2 1-3/4 2 1
Catalog Number M35-4 M35-6 M35-8 M46-6 M46-8 M46-10 M47-6 M47-8 M47-10 M57-6 M57-8 M57-10 M58-6 M58-8 M58-10 M68-6 M68-8 M68-10 M68-12 M69-6 M69-8 M69-10 M610-6 M610-8 M610-10 M610-12 M79-8 M79-10 M79-12 M710-8 M710-10 M710-12 M710-16 M711-12 M712-8 M712-10 M712-12 M713-12 M810-5 M810-6 M810-7 M810-8 M810-10 M810-11 M810-12 M810-14 M810-16 M810-18 M811-6 M811-8 M811-10 M811-12 M811-14 M811-16 M811-18 M811-20 M812-6 M812-8 M812-10 M812-12 M812-14 M812-16 M812-18 M812-20 M812-22 M813-8 M813-12 M813-18 M814-8 M814-10 M814-12 M814-14 M814-16 M816-8
Item Code 31308 31310 31312 31314 31316 31318 31320 31322 31324 31326 31328 31330 31332 31334 31336 31338 31340 31342 31344 31346 31348 31350 31362 31364 31366 31368 31352 31354 31356 31370 31372 31374 31376 31378 31380 31382 31384 31386 31388 31390 31392 31394 31396 31398 31400 31402 31404 31406 31408 31410 31412 31414 31416 31418 31420 31422 31424 31426 31428 31430 31432 31434 31436 31438 31440 31442 31444 31446 31448 31450 31452 31454 31456 31458
A
B
1/2
1
11/16
3/4 9/16
13/16
7/8
3/4
13/16
5/8 7/8
15/16
1
1-1/8
13/16
7/8 11/16
15/16
1
C 1-1/2 2 2-1/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 1 1-1/4 1-1/2 1-3/4 2 2-1/2 1 1-1/4 1-1/2 1-3/4 2 1 1-1/2 2 1 1-1/8 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3 1 1-1/2 2-1/2 1 1-1/2 2 2-1/4 2-1/2 3 1-1/2 2 2-1/4 1 1-1/2 1-3/4 2 1 1-1/4 1-1/2 2 2-1/2 1 1-1/4 1-1/2 2-1/2 1-1/4 2-1/4 2-1/2
Catalog Number M816-12 M816-16 M816-18 M911-8 M911-10 M911-12 M911-14 M911-16 M911-18 M912-8 M912-10 M912-12 M912-14 M912-16 M912-20 M913-8 M913-10 M913-12 M913-14 M913-16 M914-8 M914-12 M914-16 M1012-8 M1012-9 M1012-10 M1012-12 M1012-14 M1012-16 M1012-18 M1012-20 M1013-8 M1013-10 M1013-12 M1013-14 M1013-16 M1013-18 M1013-20 M1014-6 M1014-8 M1014-10 M1014-12 M1014-14 M1014-16 M1014-18 M1014-20 M1014-24 M1015-8 M1015-12 M1015-20 M1016-8 M1016-12 M1016-16 M1016-18 M1016-20 M1016-24 M1018-12 M1018-16 M1018-18 M1113-8 M1113-12 M1113-14 M1113-16 M1114-8 M1114-10 M1114-12 M1114-16 M1114-20 M1115-8 M1115-10 M1115-12 M1115-20 M1116-10 M1116-18 M1116-20
P-1930-BG
Item Code 31460 31462 31464 31466 31468 31470 31472 31474 31476 31480 31482 31484 31486 31488 31492 31494 31496 31498 31500 31502 31506 31508 31510 31512 31514 31516 31518 31520 31522 31524 31526 31528 31530 31532 31534 31536 31538 31540 31542 31544 31548 31550 31552 31554 31556 31558 31560 31562 31564 31568 31570 31572 31574 31576 31578 31580 31582 31584 31586 31588 31592 31594 31596 31600 31602 31604 31608 31612 31614 31616 31618 31626 31628 31634 31636
04/10
BEAR-N-BRONZE 660 Cast Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B
7/8
15/16
3/4
1
1-1/16
1-1/8
1-3/16 1-1/4
15/16 1 13/16 1-1/16 1-1/8
1
7/8
1-1/16
1-1/8
P-1930-BG
04/10
C 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3 3/4 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/8 2-1/4 2-1/2 2-3/4 3 3-1/2 1 1-1/2 2 3 1 1-1/2 2 2-1/2 3 1-1/2 2 1-3/4 2 2-1/2 3 1 1-1/2 2 1-1/2 2 2-1/2 1-1/2 2 2-3/4 1-1/2 2 1 1-1/4 1-3/8 1-1/2 1-5/8 2 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3 3/4 1 1-1/4 1-3/8
Catalog Number M1214-6 M1214-8 M1214-10 M1214-12 M1214-14 M1214-16 M1214-18 M1214-20 M1215-8 M1215-10 M1215-12 M1215-14 M1215-16 M1215-18 M1215-20 M1215-24 M1216-6 M1216-8 M1216-9 M1216-10 M1216-11 M1216-12 M1216-14 M1216-16 M1216-17 M1216-18 M1216-20 M1216-22 M1216-24 M1216-28 M1217-8 M1217-12 M1217-16 M1217-24 M1218-8 M1218-12 M1218-16 M1218-20 M1218-24 M1219-12 M1219-16 M1220-14 M1220-16 M1220-20 M1220-24 M1315-8 M1315-12 M1315-16 M1316-12 M1316-16 M1316-20 M1317-12 M1317-16 M1317-22 M1318-12 M1318-16 M1416-8 M1416-10 M1416-11 M1416-12 M1416-13 M1416-16 M1417-8 M1417-10 M1417-12 M1417-14 M1417-16 M1417-18 M1417-20 M1417-24 M1418-6 M1418-8 M1418-10 M1418-11
Item Code 31640 31642 31644 31646 31648 31650 31652 31654 31656 31658 31662 31664 31666 31668 31670 31674 31676 31678 31680 31682 31684 31686 31688 31690 31692 31694 31696 31698 31700 31702 31704 31706 31708 31714 31716 31718 31720 31724 31726 31728 31730 31734 31736 31740 31742 31744 31748 31750 31752 31756 31758 31760 31762 31766 31770 31772 31788 31790 31792 31794 31796 31798 31800 31802 31804 31806 31808 31810 31812 31816 31818 31820 31822 31824
A
B
1-1/8
7/8
1-3/16
1-1/4
1-3/8 1-1/8 1-3/16 15/16 1-1/4
1-5/16
1-1/8
1-3/16
1
1-1/4
1-5/16
1-3/8
C 1-1/2 1-3/4 2 2-1/4 2-1/2 3 3-1/4 3-1/2 1 3 1-1/2 1-3/4 2 2-1/4 2-1/2 3 3-1/2 1-1/2 2 2-1/2 3 1-1/2 2 1-1/4 1-1/2 2 3 1 1-1/2 2 2-1/2 2-3/4 1-1/2 2 1-3/8 1-1/2 1-3/4 2 2-1/2 7/8 1-1/4 1-1/2 1-3/4 2 2-1/2 3/4 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2 2-1/4 2-1/2 2-3/4 3 4 4-1/2 1-1/2 2 2-1/4 2-1/2 3 3-1/2 1-1/4 1-1/2 1-3/4 2
Catalog Number M1418-12 M1418-14 M1418-16 M1418-18 M1418-20 M1418-24 M1418-26 M1418-28 M1419-8 M1419-24 M1420-12 M1420-14 M1420-16 M1420-18 M1420-20 M1420-24 M1420-28 M1422-12 M1422-16 M1422-20 M1422-24 M1518-12 M1518-16 M1519-10 M1519-12 M1519-16 M1519-24 M1520-8 M1520-12 M1520-16 M1520-20 M1520-22 M1521-12 M1521-16 M1618-11 M1618-12 M1618-14 M1618-16 M1618-20 M1619-7 M1619-10 M1619-12 M1619-14 M1619-16 M1619-20 M1620-6 M1620-8 M1620-9 M1620-10 M1620-11 M1620-12 M1620-13 M1620-14 M1620-16 M1620-18 M1620-20 M1620-22 M1620-24 M1620-32 M1620-36 M1621-12 M1621-16 M1621-18 M1621-20 M1621-24 M1621-28 M1622-10 M1622-12 M1622-14 M1622-16
Item Code 31826 31828 31830 31832 31834 31836 31838 31840 31842 31852 31854 31856 31858 31860 31862 31864 31866 31868 31872 31874 31876 31878 31880 31884 31886 31888 31894 31896 31898 31900 31902 31904 31906 31910 31916 31918 31920 31922 31924 31926 31928 31930 31932 31934 31936 31938 31940 31942 31944 31946 31948 31950 31952 31954 31956 31958 31960 31962 31968 31970 31972 31974 31976 31978 31980 31982 31988 31990 31992 31994
F
B
A
C
STANDARD TOLERANCES
Dimensions 3/16 – 3 A 3-1/4 – 4-1/2 5/16 – 3 B 3-1/8 – 5 C All
Tolerance ±.001 ±.0015 +.002 to +.003 +.003 to +.005 ±.005
STANDARD CONCENTRICITY
Dimensions A All
T.I.R. (A to B) .003
For Oil Grooves see Page 179.
Boston Gear 800-825-6544
147
BEAR-N-BRONZE 660 Cast Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
F
B
1-3/8
1
1-1/2
1-5/8 1-3/4 2 B
1-5/16
A
1-1/16 1-7/16 1-1/4 C
1-5/16
1-3/8
1-1/8 1-7/16
STANDARD TOLERANCES
Dimensions 3/16 – 3 A 3-1/4 – 4-1/2 5/16 – 3 B 3-1/8 – 5 C All
Tolerance ±.001 ±.0015 +.002 to +.003 +.003 to +.005 ±.005
1-1/2
1-5/8
1-7/8 2
STANDARD CONCENTRICITY
Dimensions A All
T.I.R. (A to B) .003
1-3/8
For Oil Grooves see Page 179.
1-7/16 1-3/16 1-1/2 1-9/16 1-5/8
148
Boston Gear 800-825-6544
C 2-1/2 2-3/4 3 3-1/2 4 4-1/2 1-1/2 1-3/4 2 2-1/2 3 4 2 2-1/2 3 3-1/2 6-1/2 3 6-1/2 1-1/2 2 2-1/2 2-1/2 1-1/2 1-3/4 2 2-1/4 2-1/2 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 3 3-1/4 3-1/2 4 1-1/2 3 1-1/2 2 2-1/2 3 3-1/2 4 1-3/4 2 2-1/2 3 3-1/2 4-1/2 6-1/2 3 1-3/4 2 2-1/2 1-1/4 1-1/2 2 2-1/2 3 3-1/2 2 3 4 3 3-1/2 2 2-1/2 3
Catalog Number M1622-20 M1622-22 M1622-24 M1622-28 M1622-32 M1622-36 M1624-12 M1624-14 M1624-16 M1624-20 M1624-24 M1624-32 M1626-16 M1626-20 M1626-24 M1626-28 M1628-52 M1632-24 M1632-52 M1721-12 M1721-16 M1721-20 M1723-20 M1820-12 M1820-14 M1820-16 M1821-18 M1821-20 M1822-8 M1822-10 M1822-12 M1822-14 M1822-16 M1822-18 M1822-20 M1822-24 M1822-26 M1822-28 M1822-32 M1823-12 M1823-24 M1824-12 M1824-16 M1824-20 M1824-24 M1824-28 M1824-32 M1826-14 M1826-16 M1826-20 M1826-24 M1826-28 M1826-36 M1830-52 M1832-24 M1922-14 M1922-16 M1922-20 M1923-10 M1923-12 M1923-16 M1923-20 M1923-24 M1923-28 M1924-16 M1924-24 M1924-32 M1925-24 M1925-28 M1926-16 M1926-20 M1926-24
Item Code 31996 31998 32000 32004 32006 32008 32010 32012 32014 32016 32018 32020 32022 32024 32026 32028 32030 32032 32034 32036 32038 32040 32050 32062 32064 32066 32068 32070 32072 32074 32076 32078 32080 32082 32084 32086 32088 32090 32092 32094 32098 32102 32104 32106 32108 32110 32112 32114 32116 32118 32120 32122 32126 32128 32130 32134 32136 32138 32140 32142 32144 32146 32148 32150 32152 32154 32158 32162 32164 32166 32168 32170
A
B
1-3/16 1-11/16 1-7/16
1-1/2
1-9/16 1-1/4
1-5/8
1-11/16
1-3/4
1-7/8 2 1-1/2 1-5/16
1-5/8 1-13/16 1-7/8 1-1/2
1-3/8 1-5/8 1-11/16
C 2 2-1/2 3 2-1/2 3 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/4 3-1/2 4 4-1/4 4-1/2 5 5-1/2 2 2-1/2 3 3-1/2 3-3/4 1-3/4 2 2-1/2 3 3-1/4 3-1/2 4 4-1/2 4-3/4 2 3-1/4 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 3-3/4 4 5 2 2-1/2 4 3 4 6-1/2 1-3/4 3 2 3 4-3/4 3 4 3-1/2 1-3/4 2 2-1/2 2 3 3-1/4 3-1/2 4 3-1/2
Catalog Number M1927-16 M1927-20 M1927-24 M2023-20 M2023-24 M2024-8 M2024-9 M2024-10 M2024-11 M2024-12 M2024-13 M2024-14 M2024-16 M2024-18 M2024-20 M2024-22 M2024-24 M2024-26 M2024-28 M2024-32 M2024-34 M2024-36 M2024-40 M2024-44 M2025-16 M2025-20 M2025-24 M2025-28 M2025-30 M2026-14 M2026-16 M2026-20 M2026-24 M2026-26 M2026-28 M2026-32 M2026-36 M2026-38 M2027-16 M2027-26 M2028-14 M2028-16 M2028-18 M2028-20 M2028-22 M2028-24 M2028-28 M2028-30 M2028-32 M2028-40 M2030-16 M2030-20 M2030-32 M2032-24 M2032-32 M2032-52 M2124-14 M2124-24 M2126-16 M2126-24 M2126-38 M2129-24 M2129-32 M2130-28 M2224-14 M2224-16 M2224-20 M2226-16 M2226-24 M2226-26 M2226-28 M2226-32 M2227-28
P-1930-BG
Item Code 32172 32174 32176 32180 32182 32184 32186 32188 32190 32192 32194 32196 32198 32200 32202 32204 32206 32208 32210 32212 32214 32216 32218 32220 32222 32224 32226 32228 32230 32232 32234 32236 32238 32240 32242 32244 32246 32248 32250 32254 32258 32260 32262 32264 32266 32268 32270 32272 32274 32276 32278 32280 32284 32286 32288 32290 32296 32298 32306 32310 32314 32324 32328 32330 32334 32336 32338 32340 32342 32344 32346 32348 32352
04/10
BEAR-N-BRONZE 660 Cast Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
B
1-3/4 1-3/8 1-7/8 2 2-1/8 1-5/8
1-11/16
1-7/16
1-3/4 1-13/16 1-7/8 1-15/16 2 1-5/8 1-11/16
1-3/4
1-13/16
1-7/8 1-1/2
2
2-1/8 2-1/4 1-9/16 1-13/16 1-15/16 1-5/8
P-1930-BG
1-7/8
04/10
C 2 2-1/4 2-1/2 3 3-1/2 4 3 3-1/2 4 4-1/2 3 4 6-1/2 1-3/4 2-3/4 3 2-1/2 3 3-1/2 4 2-1/4 3 4 3 4-1/4 3 4 4-1/2 5 2 3 4 2 2-3/4 1-3/4 2 2-1/4 2-1/2 3 3-1/2 4 4-1/2 5 5-1/2 3 2 2-1/2 2-3/4 3 3-1/2 4 4-1/2 5 5-1/2 2-1/2 3 3-1/2 4 4-1/2 5 3 4 3 4 5 6-1/2 3 3-1/2 3-1/2 2-1/4 3 3-3/4
Catalog Number M2228-16 M2228-18 M2228-20 M2228-24 M2228-28 M2228-32 M2230-24 M2230-28 M2230-32 M2230-36 M2232-24 M2232-32 M2234-52 M2326-14 M2326-22 M2326-24 M2327-20 M2327-24 M2327-28 M2327-32 M2328-18 M2328-24 M2328-32 M2329-24 M2329-34 M2330-24 M2330-32 M2330-36 M2330-40 M2331-16 M2331-24 M2332-32 M2426-16 M2427-22 M2428-14 M2428-16 M2428-18 M2428-20 M2428-24 M2428-28 M2428-32 M2428-36 M2428-40 M2428-44 M2429-24 M2430-16 M2430-20 M2430-22 M2430-24 M2430-28 M2430-32 M2430-36 M2430-40 M2430-44 M2432-20 M2432-24 M2432-28 M2432-32 M2432-36 M2432-40 M2434-24 M2434-32 M2436-24 M2436-32 M2436-40 M2436-52 M2529-24 M2529-28 M2531-28 M2630-18 M2630-24 M2630-30
Item Code 32354 32356 32358 32360 32362 32364 32366 32368 32370 32372 32374 32376 32378 32380 32382 32384 32386 32388 32390 32392 32396 32398 32400 32402 32410 32414 32416 32420 32422 32424 32426 32438 32440 32442 32444 32446 32448 32450 32452 32454 32456 32458 32460 32462 32464 32466 32468 32470 32472 32474 32476 32478 32480 32482 32484 32486 32488 32490 32492 32494 32496 32498 32500 32502 32504 32506 32508 32510 32514 32518 32520 32522
A
1-5/8
B
2
2-1/8 1-15/16 2 1-11/16 2-1/16 2-3/16 2-1/4
2
2-1/16
2-1/8 1-3/4
2-1/4
2-3/8 2-1/2 2-3/16 1-13/16 2-5/16 2-1/8 1-7/8
2-1/4 2-3/8 2-3/16 2-1/4
1-15/16 2-5/16 2-3/8 2-7/16 2-1/2
C 1-3/4 2-1/2 2 4 5 5-1/2 3 4 3 3-1/2 3-1/2 4-1/2 3 4 4-1/2 5-1/2 2 3 4 3 4-1/2 2-1/4 2-1/2 3 4 4-1/2 5-1/4 3-1/2 2-3/4 3-1/4 3-1/2 4 4-1/4 5 1-3/4 2 2-1/2 3 3-1/2 4 4-1/4 5 3-1/2 5 6-1/2 4 4 5 2-1/2 3 4 3 5 3 4 5-1/4 2 3 3 4-1/2 3-1/2 4 5 6-1/4 4 5-1/2 3 3 5
Catalog Number M2632-14 M2632-20 M2632-24 M2632-32 M2632-40 M2632-44 M2634-24 M2634-32 M2731-24 M2731-28 M2732-28 M2732-36 M2733-24 M2733-32 M2733-36 M2733-44 M2735-16 M2735-24 M2735-32 M2736-24 M2736-36 M2832-18 M2832-20 M2832-24 M2832-32 M2832-36 M2832-42 M2833-28 M2834-22 M2834-26 M2834-28 M2834-32 M2834-34 M2834-40 M2836-14 M2836-16 M2836-20 M2836-24 M2836-28 M2836-32 M2836-34 M2836-40 M2838-28 M2838-40 M2840-52 M2935-32 M2937-32 M2937-40 M3034-20 M3034-24 M3034-32 M3036-24 M3036-40 M3038-24 M3038-32 M3038-42 M3135-16 M3135-24 M3136-24 M3136-36 M3137-28 M3137-32 M3137-40 M3137-50 M3138-32 M3138-44 M3139-24 M3140-24 M3140-40
Item Code 32526 32528 32530 32534 32538 32540 32542 32544 32550 32552 32554 32556 32558 32562 32564 32568 32570 32574 32578 32586 32588 32590 32592 32594 32596 32598 32600 32602 32604 32606 32608 32610 32612 32614 32618 32620 32622 32624 32626 32628 32630 32632 32634 32638 32640 32642 32646 32648 32650 32652 32654 32656 32662 32664 32666 32668 32670 32672 32676 32678 32680 32682 32684 32688 32692 32694 32696 32704 32706
F
B
A
C
STANDARD TOLERANCES
Dimensions 3/16 – 3 A 3-1/4 – 4-1/2 5/16 – 3 B 3-1/8 – 5 C All
Tolerance ±.001 ±.0015 +.002 to +.003 +.003 to +.005 ±.005
STANDARD CONCENTRICITY
Dimensions A All
T.I.R. (A to B) .003
For Oil Grooves see Page 179.
Boston Gear 800-825-6544
149
BEAR-N-BRONZE 660 Cast Bronze Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
F
B
2-1/4
2-3/8 2
2-1/2
2-5/8 2-3/4 2-1/2 B
A
2-1/8 2-5/8 2-5/8 C
2-11/16 2-3/16 2-3/4 2-7/8 2-1/2 2-5/8 STANDARD TOLERANCES
Dimensions 3/16 – 3 A 3-1/4 – 4-1/2 5/16 – 3 B 3-1/8 – 5 C All
Tolerance ±.001 ±.0015 +.002 to +.003 +.003 to +.005 ±.005
2-11/16 2-1/4 2-3/4
3 2-3/4 2-3/8 2-7/8
STANDARD CONCENTRICITY
Dimensions A All
2-3/4
T.I.R. (A to B) .003
2-7/8 2-7/16 2-15/16
For Oil Grooves see Page 179.
3 2-3/4 2-7/8 2-1/2 3
150
Boston Gear 800-825-6544
C 2 2-1/2 3 3-1/2 4 4-1/2 3 3-1/2 4 4-1/2 2-1/2 3 3-1/2 4 4-1/2 5 6 4 6-1/2 3 4 4 5 6 4 5 3-1/2 4-1/2 5 4-1/2 5-1/4 6 4-1/2 3-1/2 4 3 4 5 4-3/4 3-1/2 4 4-1/2 5 6 3-1/2 5 4 6 4 5 4 5 3 5 4 5 6-1/4 3-3/4 5 6-/14 4 5 3-1/4 4-1/2 4 5 6 7
Catalog Number M3236-16 M3236-20 M3236-24 M3236-28 M3236-32 M3236-36 M3238-24 M3238-28 M3238-32 M3238-36 M3240-20 M3240-24 M3240-28 M3240-32 M3240-36 M3240-40 M3240-48 M3242-32 M3244-52 M3440-24 M3440-32 M3442-32 M3442-40 M3442-48 M3542-32 M3542-40 M3543-28 M3543-36 M3543-40 M3544-36 M3544-42 M3544-48 M3546-36 M3640-28 M3640-32 M3642-24 M3642-32 M3642-40 M3643-38 M3644-28 M3644-32 M3644-36 M3644-40 M3644-48 M3648-28 M3648-40 M3844-32 M3844-48 M3846-32 M3846-40 M3944-32 M3944-40 M3946-24 M3946-40 M3947-32 M3947-40 M3947-50 M3948-30 M3948-40 M3948-50 M4044-32 M4044-40 M4046-26 M4046-36 M4048-32 M4048-40 M4048-48 M4048-56
Item Code 32708 32710 32712 32714 32718 32720 32724 32726 32728 32730 32732 32734 32736 32738 32740 32742 32746 32748 32750 32752 32754 32756 32758 32760 32762 32764 32766 32770 32772 32774 32776 32778 32780 32782 32784 32786 32788 32790 32792 32794 32796 32798 32800 32802 32806 32808 32812 32816 32818 32820 32824 32826 32828 32830 32832 32834 32836 32838 32840 32842 32844 32846 32848 32850 32852 32854 32856 32858
A
B 3-1/8
2-1/2 3-1/4 3-1/2 3 2-5/8
3-1/8
3-1/4 3-3/8 2-11/16 3-3/16 3-1/8 2-3/4 3-1/4 2-7/8
3-1/2
2-15/16 3-7/16 3-3/8 3
3-1/4
3-1/2 3-5/8 3-3/4 4 3-1/2 3-3/4
3-7/16 3-15/16 4 3-1/2
4-1/8 4-1/4
3-3/4
4-1/4 4-1/2 4-1/2
4 5 4-3/4 4-1/4 5 4-1/2
5
C 3-1/2 4 4-1/2 4 5 6 7-1/4 6-1/2 3 5 5 6 7-1/4 7 6-1/2 6-1/4 4 5 6 4 5 6 4-1/2 6-3/4 3-1/2 5 6-1/2 4-1/2 8 4-1/2 6 9 5 6-1/4 6-1/2 4 5 4-1/2 6-1/2 5-1/2 7 6 4-1/2 7 9-3/4 5 7 6-1/2 4 6 7 5 6 5 6 7 5 6 7 6 7 8
Catalog Number M4050-28 M4050-32 M4050-36 M4052-32 M4052-40 M4052-48 M4052-58 M4056-52 M4248-24 M4248-40 M4250-40 M4250-48 M4250-58 M4252-56 M4254-52 M4351-50 M4450-32 M4450-40 M4450-48 M4452-32 M4452-40 M4452-48 M4656-36 M4656-54 M4755-28 M4755-40 M4755-52 M4854-36 M4854-64 M4856-36 M4856-48 M4856-72 M4858-40 M4860-50 M4864-52 M5256-32 M5260-40 M5563-36 M5563-52 M5664-44 M5664-56 M5666-48 M5668-36 M5668-56 M5668-78 M6068-40 M6068-56 M6072-52 M6472-32 M6472-48 M6472-56 M6480-40 M6480-48 M6876-40 M6876-48 M6876-56 M6880-40 M6880-48 M6880-56 M7280-48 M7280-56 M7280-64
P-1930-BG
Item Code 32860 32862 32864 32868 32870 32872 32874 32876 32878 32882 32884 32886 32888 32890 32892 32898 32900 32902 32904 32906 32908 32910 32926 32928 32930 32932 32934 32936 32938 32940 32942 32944 32946 32952 32954 32956 32958 32964 32966 32968 32970 32972 32974 32976 32978 32980 32982 32984 32986 32988 32990 32992 32994 32998 33000 33002 33004 33006 33008 33010 33012 33014
04/10
BEAR-N-BRONZE 660 Cast Bronze Bearings Cored Bars ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
1/2
5/8
3/4
7/8
1
B 1 1-1/8 1-1/4 1-1/2 1-3/4 2 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-3/4 3 2-1/4 3-1/2 4
Aprx. Wgt. (Lbs.) 2-3/4 3-3/4 4-3/4 7 9-3/4 12-3/4 2 3 4 5 6-1/2 9 1-1/2 2-1/2 3-1/2 4-1/2 5-1/2 8 11-1/2 15 19-1/2 24 1-7/8 2-7/8 4 5 6-1/2 7-1/2 11 2 3-1/8 4-1/2 5-1/2 7 8-1/2 10 13-1/2 17-1/2 22 27 32 37-1/2 50
Catalog Number
Item Code
MCB816 MCB818 MCB820 MCB824 MCB828 MCB832 MCB1016 MCB1018 MCB1020 MCB1022 MCB1024 MCB1028 MCB1216 MCB1218 MCB1220 MCB1222 MCB1224 MCB1228 MCB1232 MCB1236 MCB1240 MCB1244 MCB1418 MCB1420 MCB1422 MCB1424 MCB1426 MCB1428 MCB1432 MCB1620 MCB1622 MCB1624 MCB1626 MCB1628 MCB1630 MCB1632 MCB1636 MCB1640 MCB1644 MCB1648 MCB1652 MCB1656 MCB1664
33016 33018 33020 33024 33026 33028 47640 33030 33032 33034 33036 33040 47641 47642 33046 33048 33050 33054 33058 33062 33064 33066 47643 47644 33068 33070 33072 33074 33078 47645 47646 33084 33086 33088 33090 33092 33096 33100 33102 33104 33106 33108 33110
A
1-1/8
1-1/4
1-3/8
1-1/2
B 1-3/8 1-1/2 1-5/8 2-1/8 2-3/8 2-1/2 2-3/4 2-7/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-3/4 3 3-1/4 3-1/2 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-3/4 3-1/4 3-1/2 3-3/4 4 4-1/2
Aprx. Wgt. (Lbs.) 2-1/4 4-1/2 5 11-1/2 15 16-1/2 21 24 2-1/2 3-7/8 5-1/2 7 8-1/2 10-1/2 12 14 16 20 25 30 35-1/2 4-1/4 6 7-1/2 9-1/2 11 12-1/2 3 4-1/2 6 8 10 11-1/2 14 18 27-1/2 33 40 45 62
Catalog Number
Item Code
MCB1822 MCB1824 MCB1826 MCB1834 MCB1838 MCB1840 MCB1844 MCB1846 MCB2024 MCB2026 MCB2028 MCB2030 MCB2032 MCB2034 MCB2036 MCB2038 MCB2040 MCB2044 MCB2048 MCB2052 MCB2056 MCB2228 MCB2230 MCB2232 MCB2234 MCB2236 MCB2238 MCB2428 MCB2430 MCB2432 MCB2434 MCB2436 MCB2438 MCB2440 MCB2444 MCB2452 MCB2456 MCB2460 MCB2464 MCB2472
47647 47648 33112 33120 33124 33126 33128 33130 47649 47650 33132 33134 33136 33138 33140 33142 33144 33148 33152 33154 33156 47652 33160 33162 33164 33166 33168 47653 47654 33178 33180 33182 33184 33186 33190 33194 33196 33198 33200 33202
F
B
A
STANDARD TOLERANCES
Dimensions 1/2 – 4 A 4-1/4 – 8 1–4 B 4-1/4 – 9
Tolerance – 1/16 – 1/8 + 1/16 + 1/8
All bars are 13" long. Contact factory for bars longer than 13". Available in lengths up to 105".
P-1930-BG
04/10
Boston Gear 800-825-6544
151
BEAR-N-BRONZE 660 Cast Bronze Bearings Cored Bars ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE A
F
1-5/8
1-3/4
B
A
1-7/8
2
STANDARD TOLERANCES
Dimensions 1/2 – 4 A 4-1/4 – 8 1–4 B 4-1/4 – 9
Tolerance – 1/16 – 1/8 + 1/16 + 1/8
2-1/8
2-1/4
B 2 2-1/8 2-1/4 2-3/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 3 3-1/4 3-1/2 4 4-1/4 2-1/4 2-3/8 2-1/2 2-5/8 3-1/4 2-1/4 2-1/2 2-5/8 2-3/4 3 3-1/4 3-1/2 3-3/4 4 4-1/2 5 6 2-5/8 2-7/8 2-3/4 3-1/4 3-1/2 3-3/4 4 4-1/4
Aprx. Wgt. (Lbs.) 4-7/8 7 9 10-1/2 3-3/8 5-1/8 7-1/2 9 11 13-1/2 15-1/2 20 25 31 42-1/2 50 5-1/2 7-1/2 9-3/4 12 23 3-7/8 8-1/2 10 12-1/4 16-1/2 22 29 34 39-1/2 54 69 105-1/2 8-1/2 13 9 19 25 30-1/2 37 43
Catalog Number
Item Code
MCB2632 MCB2634 MCB2636 MCB2638 MCB2832 MCB2834 MCB2836 MCB2838 MCB2840 MCB2842 MCB2844 MCB2848 MCB2852 MCB2856 MCB2864 MCB2868 MCB3036 MCB3038 MCB3040 MCB3042 MBC3052 MCB3236 MCB3240 MCB3242 MCB3244 MCB3248 MBC3252 MCB3256 MCB3260 MCB3264 MCB3272 MCB3280 MCB3296 MCB3442 MCB3446 MCB3644 MBC3652 MCB3656 MCB3660 MCB3664 MCB3668
47655 33204 33206 33208 47656 47657 33218 33220 33222 33224 33226 33230 33232 33234 33238 33240 47658 33242 33244 33246 33254 47659 33256 33258 33260 33264 33266 33268 33270 33272 33274 33276 33278 33280 33284 33294 33302 33304 33306 33308 33310
A
2-3/8
2-1/2
2-3/4
2-7/8
3
3-1/4
3-1/2
3-3/4
B 3 4 3 3-1/8 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 5 5-1/2 3-1/2 3-3/4 4 4-1/4 4-1/2 4 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4 5 5-1/2 6 6-1/2 4 4-1/4 4-1/2 4-3/4 5 4-1/4 4-1/2 4-3/4 5 5-1/2 6 6-1/2 4-1/2 4-3/4 5 6
Aprx. Wgt. (Lbs.) 12 35 9-7/8 13 15 21 27 33-1/2 40 46 61 78 19-1/2 22-1/2 28-1/2 35 42 26-3/4 11-1/2 18-1/4 24-1/2 31 38 45 52 70 89-1/2 110 19-1/2 25-1/2 34 41 48 20-7/8 30 35-1/2 44 61 79 107-1/2 22-1/4 29 38 74
Catalog Number
Item Code
MCB3848 MCB3864 MCB4048 MCB4050 MCB4052 MCB4056 MCB4060 MCB4064 MCB4068 MCB4072 MCB4080 MCB4088 MCB4456 MCB4460 MCB4464 MCB4468 MCB4472 MCB4664 MCB4856 MCB4860 MCB4864 MCB4868 MCB4872 MCB4876 MCB4880 MCB4888 MCB4896 MCB48104 MCB5264 MCB5268 MCB5272 MCB5276 MCB5280 MCB5668 MCB5672 MCB5676 MCB5680 MCB5688 MCB5696 MCB56104 MCB6072 MCB6076 MCB6080 MCB6096
33314 33322 47661 33324 33326 33328 33330 33332 33334 33336 33340 33342 47662 33354 33356 33358 33360 33364 47663 33366 33368 33370 33372 33374 33376 33378 33380 33382 47664 33384 33386 33388 33390 47665 33394 33396 33398 33400 33402 47666 47667 33404 33406 33410
All bars are 13" long. Contact factory for bars longer than 13".
152
Boston Gear 800-825-6544
P-1930-BG
04/10
BEAR-N-BRONZE 660 Cast Bronze Bearings Cored Bars ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
4
4-1/4
4-1/2
4-3/4 5
B 4-3/4 5 5-1/2 6 6-1/2 7 7-1/2 5-1/2 6 6-1/2 5-1/2 6 6-1/2 7 6 6 7 7-1/2 8
Aprx. Wgt. Catalog (Lb.) Number
Item Code
22-3/4 32-1/4 49 67-1/2 87 109 134 41-1/4 61 82 36 56-1/2 75 97 67 39 81 104 130
47668 47669 33412 33414 33416 33510 33512 47670 33418 33514 47671 47672 33420 33422 47673 33428 33430 33516 33518
MCB6476 MCB6480 MCB6488 MCB6496 MCB64104 MCB64112 MCB64120 MCB6888 MCB6896 MCB68104 MCB7288 MCB7296 MCB72104 MCB72112 MCB7696 MCB8096 MCB80112 MCB80120 MCB80128
Aprx. A 5-1/4
5-1/2
5-3/4
6
6-1/2 8
B 7 7-1/2 6-1/2 7 7-1/2 8 7-1/2 7 7-1/2 8 9 7-1/2 8 9 9
Wgt. Catalog (Lb.) Number
Item Code
77 97 43 67-1/4 91 113 79 46-1/2 72-1/2 94 151 50-1/4 84 130 61
47675 33432 47676 47677 33434 33436 33438 47678 47679 33440 33522 47681 47682 33442 47684
MCB84112 MCB84120 MCB88104 MCB88112 MCB88120 MCB88128 MCB92120 MCB96112 MCB96120 MCB96128 MCB96144 MCB104120 MCB104128 MCB104144 MCB128144
F
B
A
STANDARD TOLERANCES
All bars are 13" long. Contact factory for bars longer than 13".
Dimensions 1/2 – 4 4-1/4 – 8 1–4 B 4-1/4 – 9 A
Tolerance – 1/16 – 1/8 + 1/16 + 1/8
Solid Bars ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
B
Aprx. Wgt. (Lb.)
Catalog Number
Item Code
1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-5/8 2-3/4
1 1-1/2 2 2-3/4 3-1/2 4-1/2 5-1/2 6-1/2 7-1/2 8-1/2 10-1/4 11-1/2 14 17 21-1/2 23-1/2 25-1/2
MS8 MS10 MS12 MS14 MS16 MS18 MS20 MS22 MS24 MS26 MS28 MS30 MS32 MS36 MS40 MS42 MS44
33444 33446 33448 33450 33452 33454 33456 33458 33460 33462 33464 33466 33468 33472 33476 33478 33480
All Bars are 13" long. Contact Factory for Bars longer than 13".
B
Aprx. Wgt. (Lb.)
Catalog Number
Item Code
3 3-1/4 3-1/2 4 4-1/4 4-1/2 4-3/4 5 5-1/2 6 6-1/2 7 7-1/2 8 9
30 35-1/2 41 53 59 67 73 82 98 118 139 161 186 210-1/2 273
MS48 MS52 MS56 MS64 MS68 MS72 MS76 MS80 MS88 MS96 MS104 MS112 MS120 MS128 MS144
33484 33486 33488 33492 33494 33496 33536 33498 33500 33502 33538 33504 33506 33508 33544
B
STANDARD TOLERANCES
Dimensions 1/2 – 4 B 4-1/4 – 9
P-1930-BG
04/10
Tolerance + 1/16 approx. + 1/8 approx.
Boston Gear 800-825-6544
153
Bronze Bearing Emergency Banks
SAVES MONEY — Reduce time lost when breakdowns occur due to bearing failures. You own stock — any time — day or night. COMPACT — Handy metal kit keeps bearings together in conveniently labeled compartments. Bearings where you want them — when you need them.
F
REFILLS AVAILABLE — Both kit and replacement bearings are available from stock. See your Boston Gear Distributors, in all major cities — from coast to coast.
Actual Size of Bank 10-1/2 x 13-1/2"
BOST-BRONZ Emergency Bank Order by Catalog Number-34500 BBB-1 There are two each of the 47 bearing sizes below in the bank.
B46-8 B47-8 B48-8 B56-8 B58-8 B68-10 B69-10 B610-10 B79-10 B710-10 B711-12 B810-12 B812-16 B813-12 B814-12 B912-12
1/4 x 3/8 x 1 1/4 x 7/16 x 1 1/4 x 1/2 x 1 5/16 x 3/8 x 1 5/16 x 1/2 x 1 3/8 x 1/2 x 1-1/4 3/8 x 9/16 x 1-1/4 3/8 x 5/8 x 1-1/4 7/16 x 9/16 x 1-1/4 7/16 x 5/8 x 1-1/4 7/16 x 11/16 x 1-1/2 1/2 x 5/8 x 1-1/2 1/2 x 3/4 x 2 1/2 x 13/16 x 1-1/2 1/2 x 7/8 x 1-1/2 9/16 x 3/4 x 1-1/2
B913-12 B1012-12 B1013-16 B1014-16 B1016-16 B1114-16 B1214-12 B1215-16 B1216-20 B1218-16 B1316-16 B1416-12 B1418-20 B1420-16 B1519-16 B1520-16
9/16 x 13/16 x 1-1/2 5/8 x 3/4 x 1-1/2 5/8 x 13/16 x 2 5/8 x 7/8 x 2 5/8 x 1 x 2 11/16 x 7/8 x 2 3/4 x 7/8 x 1-1/2 3/4 x 15/16 x 2 3/4 x 1 x 2-1/2 3/4 x 1-1/8 x 2 13/16 x 1 x 2 7/8 x 1 x 1-1/2 7/8 x 1-1/8 x 2-1/2 7/8 x 1-1/4 x 2 15/16 x 1-3/16 x 2 15/16 x 1-1/4 x 3
B1618-16 B1620-20 B1622-24 B1624-16 B1721-20 B1822-24 B1824-16 B1923-24 B1924-24 B2024-24 B2026-16 B2126-24 B2228-16 B2328-24 B2430-16
1 x 1-1/8 x 2 1 x 1-1/4 x 3 1 x 1-3/8 x 3 1 x 1-1/2 x 2 1-1/16 x 1-5/16 x 2-1/2 1-1/8 x 1-3/8 x 3 1-1/8 x 1-1/2 x 2 1-3/16 x 1-7/16 x 3 1-3/16 x 1-1/2 x 3 1-1/4 x 1-1/2 x 3 1-1/4 x 1-5/8 x 2 1-5/16 x 1-5/8 x 3 1-3/8 x 1-3/4 x 2 1-7/16 x 1-3/4 x 3 1-1/2 x 1-7/8 x 2
BEAR-N-BRONZ Emergency Bearing Bank Order by Item Code
Bank #1 Item Code – 31300 Bank #2 Item Code – 31304
Bank #1 There are two each of the 30 bearing sizes below in the bank.
M46-10 M58-10 M69-10 M710-10 M812-12 M816-16 M912-12 M1014-12 M1115-12 M1216-12 M1316-12 M1420-14 M1520-20 M1620-16 M1624-16 M1723-20
154
1/4 x 3/8 x 1-1/4 5/16 x 1/2 x 1-1/4 3/8 x 9/16 x 1-1/4 7/16 x 5/8 x 1-1/4 1/2 x 3/4 x 1-1/2 1/2 x 1 x 2 9/16 x 3/4 x 1-1/2 5/8 x 7/8 x 1-1/2 11/16 x 15/16 x 1-1/2 3/4 x 1 x 1-1/2 13/16 x 1 x 1-1/2 7/8 x 1-1/4 x 1-3/4 15/16 x 1-1/4 x 2-1/2 1 x 1-1/4 x 2 1 x 1-1/2 x 2 1-1/16 x 1-7/16 x 2-1/2
Boston Gear 800-825-6544
M1824-16 M1923-16 M1926-16 M2026-20 M2228-18 M2230-24 M2328-24 M2330-32 M2428-18 M2430-20 M2432-28 M2630-30 M2632-24 M2832-32
1-1/8 x 1-1/2 x 2 1-3/16 x 1-7/16 x 2 1-3/16 x 1-5/8 x 2 1-1/4 x 1-5/8 x 2-1/2 1-3/8 x 1-3/4 x 2-1/4 1-3/8 x 1-7/8 x 3 1-7/16 x 1-3/4 x 3 1-7/16 x 1-7/8 x 4 1-1/2 x 1-3/4 x 2-1/4 1-1/2 x 1-7/8 x 2-1/2 1-1/2 x 2 x 3-1/2 1-5/8 x 1-7/8 x 3-3/4 1-5/8 x 2 x 2 1-3/4 x 2 x 4
Bank #2 There are two each of the 20 bearing sizes below in the bank.
M1219-12 M1318-12 M1419-8 M1420-12 M1620-16 M1624-16 M1824-16 M1923-16 M2028-16 M2126-16 M2228-16 M2330-24 M2428-18 M2430-20 M2432-20 M2630-18 M2632-24 M2832-24 M3238-32 M3644-32
3/4 x 1-3/16 x 1-1/2 13/16 x 1-1/8 x 1-1/2 7/8 x 1-3/16 x 1 7/8 x 1-1/4 x 1-1/2 1 x 1-1/4 x 2 1 x 1-1/2 x 2 1-1/8 x 1-1/2 x 2 1-3/16 x 1-7/16 x 2 1-1/4 x 1-3/4 x 2 1-5/16 x 1-5/8 x 2 1-3/8 x 1-3/4 x 2 1-7/16 x 1-7/8 x 3 1-1/2 x 1-3/4 x 2-1/4 1-1/2 x 1-7/8 x 2-1/2 1-1/2 x 2 x 2-1/2 1-5/8 x 1-7/8 x 2-1/4 1-5/8 x 2 x 3 1-3/4 x 2 x 3 2 x 2-3/8 x 4 2-1/4 x 2-3/4 x 4
P-1930-BG
04/10
BOStonE F-1 Glass Filled Teflon Bearings
F
BOStonE F-1 glass filled material is completely self-lubricating with outstanding wear and corrosion resistance properties, machined from extruded rods to close tolerances. BOStonE F-1 material has a wide temperature capability and an excellent PV value. BOStonE F-1 bearings are green in color.
Selection
Lubrication of these bearings is not required. Teflon®, the major ingredient of BOStonE F-1 material (75%), has excellent selflubricating characteristics and a low coefficient of friction. The remaining 25% is glass.
A general guide to determination of limiting load and velocity values for sleeve bearings has been established by the use of PV calculations. PV represents Pressure x Velocity, for example 100 psi x 20 fpm yields a PV of 2000.
BOStonE F-1 bearing material has excellent strength and wearability and was developed to withstand high loads at moderate speeds. The allowable operating temperature range is –400° to +550°F.
Maximum PV value for BOStonE F-1 bearings: 20,000 (50,000 for intermittent service).
In general, sleeve bearings should be selected with a length of one to two times the shaft diameter and an O.D. approximately 25% larger than the shaft diameter.
For complete selection and application information, see Engineering Section, Pages 174-182.
Typical applications for BOStonE F-1 bearings are textile machinery, farm implements, food processing equipment, pulp and paper machinery, business machinery, aircraft, home appliances, automotive and machine tools as well as many others, in both the electrical and chemical fields. Cylindrical, Flanged and Thrust Bearings and Solid Bars are stocked in BOStonE F-1 material.
P-1930-BG
04/10
Boston Gear 800-825-6544
155
BOStonE F-1 Glass Filled Teflon Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
F
B
A
Item Code 56819 56820 56821 56822 56823 56824 56825 56826 56827 56828 56829 56830 56831 56832 56833 56834 56835 56836 56837 56841 56842 56843
3/4 P1115-6
56844
B
C
1/8 .129
1/4 .251
3/16 .191
5/16 .313
1/4 .254
3/8 .376
5/16 .316 3/8 .379
1/2 .501 9/16 .563
7/16 .441
5/8 .626
1/2 .504
3/4 .751
5/8
7/8 .876
1/4 3/8 1/4 3/8 1/2 1/4 3/8 1/2 3/8 1/2 3/8 1/2 3/4 3/8 1/2 3/4 1/2 3/4 1 5/8 3/4 1
.630
11/16 15/16 .693 .938
C
Catalog Number P24-2 P24-3 P35-2 P35-3 P35-4 P46-2 P46-3 P46-4 P58-3 P58-4 P69-3 P69-4 P69-6 P710-3 P710-4 P710-6 P812-4 P812-6 P812-8 P1014-5 P1014-6 P1014-8
A
A
B
3/4 .755
1 1.001
7/8 .880
1-1/8 1.126
1 1-1/4 1.005 1.251 1-1/8 1-3/8 1.130 1.376 1-1/4 1-1/2 1.255 1.501
On A and B dimensions, tolerances apply to actual (decimal) dimensions
Catalog C Number 1/2 P1216-4 3/4 P1216-6 1 P1216-8 3/4 P1418-6 1 P1418-8 3/4 P1620-6 1 P1620-8 1-1/2 P1620-12 3/4 P1822-6 1 P1822-8 1-1/2 P1822-12 3/4 P2024-6 1 P2024-8 1-1/2 P2024-12 1 P2226-8 1-1/2 P2226-12 1 P2428-8 1-1/2 P2428-12 2 P2428-16
Item Code 56845 56846 56847 56848 56849 56850 56851 56852 56853 56854 56855 56856 56857 56858 56859 56860 56861 56862 56863
1-3/8 1.380 1-1/2 1.506
1-5/8 1.626 1-3/4 1.751
1-5/8 1.631 1-3/4 1.756 1-7/8 1.881 2 2.006
1-7/8 1-3/4 P2630-14 56864 1.876 2 1-3/4 P2832-14 56865 2.001 2-1/8 2 P3034-16 56866 2.126 2-1/4 2 P3236-16 56867 2.251
STANDARD TOLERANCES
Dimensions A B C
STANDARD CONCENTRICITY
Tolerance
All
+.002 to –.000
All
±.005
Flanged Bearings
Dimensions .129 – 1.005 A 1.130 – 2.006
T.I.R. (A to B) .003 .004
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
E
3/16 .191 1/4 .254 3/8 .379 1/2 .504
5/16 .313 3/8 .376 5/8 .626 3/4 .751
.437
1/16
.500
1/16
.875
1/8
1.000
1/8
5/8 .630 3/4 .755
7/8 .876 1 1.001
1/4 1/2 3/8 1/2 1/2 3/4 1/2 3/4 1 3/4 1
1.000
1/8
1.250
1/8
1
Catalog Number FP35-2 FP35-4 FP46-3 FP46-4 FP610-4 FP610-6 FP812-4 FP812-6 FP812-8 FP1014-6 FP1014-8
Item Code 56868 56869 56870 56871 56872 56873 56874 56875 56876 56877 56878
FP1216-8
56879
On A and B dimensions, tolerances apply to actual (decimal) dimensions D
B A
STANDARD TOLERANCES
Dimensions E C
156
Boston Gear 800-825-6544
A B C D E
STANDARD CONCENTRICITY
Tolerance
All
+.002 to –.000
All All All
±.005 ±.005 ±.003
A
Dimensions All
T.I.R. (A to B) .003
P-1930-BG
04/10
BOStonE F-1 Glass Filled Teflon Bearings Thrust Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number
Item Code
.060
TP410
56880
.060
TP612
56881
.060
TP816
56882
A
B
C
1/4 .254 3/8 .379 1/2 .504
5/8 .625 3/4 .750 1 1.000
F
On A and B dimensions, tolerances apply to actual (decimal) dimensions.
STANDARD TOLERANCES
A C E
Dimensions All All All
Tolerance +.005 to –.000 ±.003 ±.003
A
B
C
Solid Bars (Extruded)
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
B
Approx. Weight (In Lbs.)
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2
.065 .135 .233 .504 .878 1.355 1.937 3.250
Catalog Number
Item Code
SP4 SP6 SP8 SP12 SP16 SP20 SP24 SP32
50958 50959 50960 50961 50962 50963 50964 50965
All Bars are 13" long. Other Diameters and longer Lengths are available on special order. STANDARD TOLERANCES
Dimensions 1/4 - 1/2 3/4 - 1 B 1-1/4 1-1/2 - 2
Tolerance –.000 to +.015 –.000 to +.020 –.000 to +.030 –.000 to +.040
B
Other BOStonE F-1 SHAPES AVAILABLE ON SPECIAL ORDER
CORED BARS P-1930-BG
04/10
CIRCULAR DISCS
TUBING
PLATES Boston Gear 800-825-6544
157
RULON 641 Bearings ®
Boston Gear’s RULON 641 Bearings are designed to overcome the chronic problems that plague bearings used in food and pharmaceutical applications.
Features
F
• FDA cleared, USDA accepted non-toxic materials • RULON 641 compound of virgin PTFE and fillers designed to meet poultry and meat industry specs • FDA drug master file numbered to allow for incidental contact with body fluids • Excellent load and wear characteristics for continuous nonlubricated service • Compatible with food and drug industries standard stainless steels 303 and 316 as well as 1018 mild steel • Designed for performance at extremely high temperatures. PV value of 10,000 with 316 stainless steel • Capable of speeds up to 400 ft/minute under dry, low-load operation • Stick-slip is virtually nonexistent due to low friction at startup and slow speeds. Ideal for oscillating or start/stop applications • Corrosion resistant, unaffected by all common acids, bases, and solvents • Shatter proof design to eliminate sudden breakdowns
Why RULON 641 for Food and Pharmaceutical Applications • White natural color and lower friction than when using carbon bearings • No metallic debris to drop into a process such as when using bronze bearings • No leaky lubricants or lubricants damaged by high or low temperatures or cleaning solutions such as when using bronze bearings • RULON 641 has a wider temperature tolerance and better load carrying capabilities than UHMWPE materials • RULON 641 has better wear properties and better high temperature load carrying capabilities than virgin PTFE alone • Reduced downtime • No lubrication required
158
Boston Gear 800-825-6544
P-1930-BG
04/10
RULON 641 Bearings Applications RULON 641 bearings are perfect for use in machinery and equipment in the following areas: • • • • • •
Prepared meat products Frozen foods Cookies and crackers Candy Animal and marine fats and oils Malt beverages
• • • • •
Medicinal chemicals Pharmaceutical preparations Soaps and detergents Perfumes and cosmetics Food-related packing and sealing devices • Food and drug conveyors
Recommended Operating Limits
– 400/+500 10,000 1,000 400 RB25 8 – 16 Mild Steel, 303 +316 Stainless Steel
SLEEVE BEARINGS B Recommended –.000 Housing +.002 Bore* OD
1/4 .254 3/8 .379 1/2 .504 5/8 .630 3/4 .755 1 1.005 1-1/4 1.255 1-1/2 1.506
3/8 .376 9/16 .563 3/4 .751 7/8 .876 1 1.001 1-1/4 1.251 1-1/2 1.501 1-3/4 1.751
F
RULON 641
Friction—Static & Dynamic Water Absorption ASTM D570 Flammability ASTM D635 Chemical Resistance Thermal Conductivity BTU/hr/sq. ft/°F/in. Linear Coefficient of 78°F–200°F Thermal Expansion (-78°F)–(350°F) Note: B = Bearing Diameter
A –.000 +.002 ID
Coffee Food preparations Biological products Food process machinery Vending machines Household cooking equipment and appliances
Engineering Information
RULON 641
Temperature — Typical Range °F Maximum PV (continuous) Maximum P — PSI (static) Maximum V — SFM (no load) Shaft Hardness — Minimum Shaft Finish Recommended RMS
• • • • • •
.10–.30 0% Non-Flammable Inert 2.60 B 3.9 x 10-5 C 4.9 x 10-5 B 4.2 x 10-5 C 5.7 x 10-5
C = Bearing Length
FLANGED BEARINGS
Recommended C Catalog Shaft ±.005 Number Size
Item Code
.375/.374
.2500/.2490
.250 .375
RP46-2 RP46-3
56790 56791
.562/.561
.3750/.3740
.375
RP69-3
56792
.750/.749
.5000/.4990
.500
RP812-4
56793
.875/.874
.6250/.6240
1.000/.999
.7500/.7490
1.250/1.249
1.000/.9990
RP1014-5 RP1014-8 .750 RP1216-6 1.500 RP1216-12 1.000 RP1620-8 1.500 RP1620-12
56794 56795 56796 56797 56798 56799
1.500/1.499
1.250/1.249
2.000 RP2024-16
56800
1.750/1.749
1.500/1.499
2.000 RP2428-16
56801
.625
A B Recommended Recommended C Flange –.000 –.000 Housing Shaft Lgth. D E Catalog +.002 +.002 Bore* Size ±.005 ±.005 ±.003 Number 1/4 3/8 .254 .376 3/8 5/8 .379 .626 1/2 3/4 .504 .751 5/8 7/8 .630 .876 3/4 1 .755 1.001
Item Code
.375/.374
.2500/.2490 .500
.500 .062 RFP46-4
56802
.625/.624
.3750/.3740 .500
.875 .125 RFP610-4 56803
.750/.749
.5000/.4990 1.000 1.000 .125 RFP812-8 56804
.875/.874
.6250/.6240 1.000 1.000 .125 RFP1014-8 56805
1.000/.999 .7500/.7490 1.000 1.250 .125 RFP1216-8 56817
D
B A
E C
B
SOLID BARS
A
B Standard (Dia.) Tolerances C
Other Shapes Available On Special Order PLATES
*Press fit. .004/.001
P-1930-BG
04/10
CORED BARS
1/2 –.000-/+.015 .504 3/4 –.000/+.015 .755 1 –.000/+.020 1.005
Approx. Catalog Item Wt.Lbs. Number Code .233
RSP-8
56786
.503
RSP-12
56787
.878
RSP-16
56788
B
All Bars are 13" long Other Diameters and longer lengths are available on special order.
Note: On A and B dimensions, tolerances apply to actual (decimal) dimensions.
Boston Gear 800-825-6544
159
BOStonE Molded Plastic Bearings
F
Boston stocks Cylindrical, Flanged and Roll End Bearings in five materials — 1. Nylon (N) exhibits good chemical and corrosion resistance. Excellent abrasion resistance and low surface friction provide long wear without lubrication. These nylon bearings are black. Good up to 225ºF maximum. 2. Delrin® and Celcon® (D) are trademarks for equivalent Acetal Resins produced by Du Pont and Celanese respectively. Acetals possess excellent moisture resistance characteristics. These materials are white. Good up to 225ºF maximum. 3. Nylatron® GS (GS) is a trademark for molybdenum disulfide filled nylon produced by the Polymer Corp. Nylatron® GS exhibits excellent abrasion resistance. Nylatron® GS is dark gray in color. Good up to 225ºF maximum.
Size variation is easily accomplished by rebore or remachine operations, simply state size desired. Bores can be reduced with bushing inserts. Adaptors are available for hex shafts. (AF) Roll End Bearings, 3" and up, are Delrin or Celcon with a Teflon filled Acetal bushing. This combination provides a low cost unit with the superior properties of a Teflon filled bearing. However, one piece Teflon filled Acetal bearings can be offered upon request. For bearings not shown — write for prices stating quantity desired.
Blind Bore Bearings
4. Teflon filled Acetal (AF) — Teflon.® This material has excellent abrasion and corrosion resistance and high lubricity against steel. Good up to 225ºF maximum.
Blind Bore Bearings are available on special order. Minimum quantities will apply. They are available for roll end bearing sizes 818 through 2216 and 8P40 through 20P40. Depth of blind bores is 1/8" less than total bearing length. When ordering, add “B” to Catalog Number.
5. Teflon filled Nylon (TN) used for Hanger Bearings only, is light gray in color.
Selection
Roll End Bearings These bearings are available in almost every conceivable size directly from stock — no costly waiting, tooling or set-up charges. Sizes are interchangeable with existing wood and ball bearings. Several objectives can be met with Roll End Bearings made of our selected plastic resins.
A general guide to determination of limiting load and velocity values for sleeve bearings has been established by the use of PV calculations. PV represents Pressure x Velocity, for example: 100 psi x 20 fpm yields a PV of 2000. Maximum PV values for BostonE Molded Plastic Bearings are: Nylon (N) — 3,000 Delrin or Celcon (D) — 3,000
1.
No lubricant required
Nylatron GS (GS) — 4,000
2.
Clean — Neat appearance
Teflon filled Acetal (AF) — 8,000
3.
Non-contamination
Teflon filled nylon (TN) — 10,000
4.
Resistant to moisture & chemicals
5.
Quiet operation
6.
Excellent load & wear ratings
Roll End Bearings have ribbed construction to allow closer dimensional control, to help dissipate heat and to reduce cost. These designs help prevent distortion or seizure of bearing bore, normally caused by high press fits, temperature change and moisture absorption.
160
Boston Gear 800-825-6544
For complete selection and application information, see Engineering Section, Pages 174-181.
Teflon® is a registered trademark of Dupont.
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A*
B*
C
1/4 5/16 3/8 1/2
1/2 1/2 1/2 5/8
7/8 7/8 7/8 1
5/8
3/4
3/4
5/8
3/4
1-1/2
3/4
1
1-1/2
7/8 1 1
1-1/8 1-1/4 1-1/4
1-1/4 2 1-1/2
Catalog Number
Item† Code
GS48-7 GS58-7 GS68-7 AF810-8 GS1012-6 AF1012-6 GS1012-12 AF1012-12 GS1216-12 AF1216-12 D1418-10 GS1620-16 AF1620-12
57551 57552 57553 57555 57557 57558 57559 57560 57561 57562 57565 -
F
B
A
†Any item listed WITHOUT an item Code Number is available on a SPECIAL ORDER BASIS and minimun quantities may apply. C
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
Flanged Type
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A*
B*
C
D
E
3/8
5/8 3/4
1 1-1/2
7/8 1
1/16 1/16
7/16
3/4
1-1/2
1
1/16
5/8
1
7/8
1/16
1
1/16
1
1/16
1
1/16
1/2 3/4 9/16
3/4
5/8
3/4
3/4
1
1
1-1/4
1-1/2 2 1-1/2 2 1-1/2 2 1-1/2
1-1/2 1-1/4 2
1-1/2 1-3/4 1-1/2
1/8
1-1/2
1/8
2
1/8
Catalog Number
Item Code
FGS610-8 FAF610-8 FAF612-12 FAF712-12 FGS810-8 FAF810-8 FAF812-12 FGS812-16 FAF912-12 FGS912-16 FGS1012-12 FGS1012-16 FAF1012-12 FGS1216-12 FAF1216-12 FGS1620-16 FAF1620-16 FAF2428-12
57577 57578 57585 57586 57579 57580 57587 57582 57588 57583 57589 57584 57590 57591 57592 57593 57594 57606
*Approx. dimensions. Actual size related to molding variations, however, wall thickness will be quite uniform making it practical to use these bearings for many applications.
D
B A
E C
Material Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
P-1930-BG
04/10
Boston Gear 800-825-6544
161
BOStonE Molded Plastic Bearings Roll End Bearings for Steel Tubing ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Tube Size)
A*
C
D
E
1/8
F
3/4 22 ga.
3/16
.750 O.D. .694 I.D. 7/8 20 ga.
1/4
.875 O.D. .805 I.D.
9/16 5/32 3/32
3/16 1/4 3/8
9/16 5/32 3/32
1/4 1 18 ga.
3/8
1.000 O.D. .902 I.D.
1/2
C
9/16 3/16
1/8
5/8
3/16
1/8
3/4
1/4
1/8
7/8
5/16 3/16
1
5/16 3/16
1/4
D
B
A
E
1-1/4 16 ga.
3/8
1.250 O.D. 1.120 I.D.
1/2
PRESS FIT INTO ROLL SIZE
1/4 5/16
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
1-3/8 18 ga. 3/8 1.375 O.D. 1.277 I.D.
1/2 1/4
1-1/2 16 ga.
3/8 1/2
1.500 O.D. 1.370 I.D.
5/8 1/4
*These dimensions are approximately 1/64" larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply.
3/8 1-1/2 EMT 1/2
BLIND BORE Bearings are available on special order — minimum quantities will apply.
1.740 O.D. 1.610 I.D.
162
Boston Gear 800-825-6544
5/8
Catalog Number 622D-1/8 622GS-1/8 622AF-1/8 622D-3/16 622GS-3/16 622AF-3/16 622D-1/4 622GS-1/4 622AF-1/4 720D-3/16 720AF-3/16 720AF-1/4 720D-3/8 720AF-3/8 818D-1/4 818GS-1/4 818AF-1/4 818GS-3/8 818AF-3/8 818D-1/2 818GS-1/2 818AF-1/2 1016D-1/4 1016GS-1/4 1016AF-1/4 1016D-3/8 1016GS-3/8 1016AF-3/8 1016D-1/2 1016GS/1/2 1016AF-1/2 1118D-1/4 1118GS-1/4 1118AF-1/4 1118D-5/16 1118GS-5/16 1118AF-5/16 1118D-3/8 1118GS-3/8 1118AF-3/8 1118D-1/2 1118GS-1/2 1118AF-1/2 1216D-1/4 1216GS-1/4 1216AF-1/4 1216D-3/8 1216GS-3/8 1216AF-3/8 1216GS-1/2 1216AF-1/2 1216D-5/8 1216GS-5/8 1216AF-5/8 12EMD-1/4 12EMGS-1/4 12EMAF-1/4 12EMD-3/8 12EMGS-3/8 12EMAF-3/8 12EMD-1/2 12EMGS-1/2 12EMAF-1/2 12EMD-5/8 12EMGS-5/8 12EMAF-5/8
Item † Code 56920 56923 56926 56921 56924 56927 56922 56925 56928 56929 — — 56931 — 56938 56941 56944 56942 56945 56940 56943 56946 56947 56950 56953 56948 56951 56954 56949 56952 56955 56956 56960 — 56957 56961 — 56958 56962 — 56959 56963 — 56968 56972 56976 56969 56973 56977 56974 56978 56971 56975 56979 — — — 56981 — — 56982 56986 — 56983 56987 —
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Roll End Bearings for Steel Tubing ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Tube Size)
A*
C
D
E
1
5/16
3/16
1
5/16
3/16
1/4 3/8 1-5/8 16 ga. 1/2 1.625 O.D. 1.495 I.D.
5/8 1/4 3/8
1-3/4 16 ga.
1/2 5/8
1.750 O.D. 1.620 I.D.
3/4 1/4 3/8
1-7/8 16 ga.
1/2
1
5/16
3/16
5/8 1.875 O.D. 1.745 I.D.
3/4 1/4 3/8
2 18 ga.
1/2
1
5/16
3/16
5/8 2.000 O.D. 1.902 I.D.
3/4 1/4 3/8
2 16 ga.
1/2 5/8
2.000 O.D. 1.8701 I.D.
P-1930-BG
04/10
3/4
1
5/16
3/16
Catalog Number 1316D-1/4 1316GS-1/4 1316AF-1/4 1316D-3/8 1316GS-3/8 1316AF-3/8 1316D-1/2 1316GS-1/2 1316AF-1/2 1316D-5/8 1316GS-5/8 1316AF-5/8 1416D-1/4 1416GS-1/4 1416AF-1/4 1416D-3/8 1416GS-3/8 1416AF-3/8 1416D-1/2 1416GS-1/2 1416AF-1/2 1416D-5/8 1416GS-5/8 1416AF-5/8 1416D-3/4 1416GS-3/4 1416AF-3/4 1516D-1/4 1516GS-1/4 1516AF-1/4 1516D-3/8 1516GS-3/8 1516AF-3/8 1516D-1/2 1516GS-1/2 1516AF-1/2 1516D-5/8 1516GS-5/8 1516AF-5/8 1516D-3/4 1516GS-3/4 1516AF-3/4 1618D-1/4 1618GS-1/4 1618AF-1/4 1618D-3/8 1618GS-3/8 1618AF-3/8 1618D-1/2 1618GS-1/2 1618AF-1/2 1618D-5/8 1618GS-5/8 1618AF-5/8 1618D-3/4 1618GS-3/4 1618AF-3/4 1616D-1/4 1616GS-1/4 1616AF-1/4 1616D-3/8 1616GS-3/8 1616AF-3/8 1616D-1/2 1616GS-1/2 1616AF-1/2 1616D-5/8 1616GS-5/8 1616AF-5/8 1616D-3/4 1616GS-3/4 1616AF-3/4
Item † Code — 56996 — 56993 56997 — 56994 56998 — 56995 56999 — 57070 57075 — 57071 57076 — 57072 57077 — 57073 57078 57083 57074 57079 57084 57085 57090 — 57086 57091 — 57087 57092 — 57088 57093 — — 57094 — 57872 57877 — — — — 57874 57879 — 57875 57880 — 57876 57881 — 57100 57105 — 57101 57106 — 57102 57107 57112 57103 57108 — 57104 — —
F
C D
B
A
E
PRESS FIT INTO ROLL SIZE
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
*These dimensions are approximately 1/64" larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply. BLIND BORE Bearings are available on special order — minimum quantities will apply.
Boston Gear 800-825-6544
163
BOStonE Molded Plastic Bearings Roll End Bearings for Steel Tubing
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE † B (Tube Size)
A*
C
D
E
1/4
F
3/8 2 EMT
1/2
1
5/16
3/16
1
5/16
3/16
1
5/16
3/16
1
5/16
3/16
1
5/16
3/16
5/8 2.190 O.D. 2.067 I.D.
3/4 1/4 3/8
2-1/4 18 ga.
1/2
C
5/8
D
B
2.250 O.D. 2.152 I.D.
A
3/4 1/4
E
PRESS FIT INTO ROLL SIZE
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
3/8 2-1/4 16 ga.
1/2 5/8
2.250 O.D. 2.120 I.D.
3/4 1/4 3/8
2-1/2 18 ga.
1/2 5/8
2.500 O.D. 2.402 I.D.
3/4
*These dimensions are approximately 1/64" larger than listed.
1/4
†Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply.
3/8
BLIND BORE Bearings are available on special order — minimum quantities will apply.
2-1/2 16 ga.
1/2 5/8
2.500 O.D. 2.370 I.D.
164
Boston Gear 800-825-6544
3/4
Catalog Number
Item † Code
16EMD-1/4 16EMGS-1/4 16EMAF-1/4 16EMD-3/8 16EMGS-3/8 16EMAF-3/8 16EMD-1/2 16EMGS-1/2 16EMAF-1/2 16EMD-5/8 16EMGS-5/8 16EMAF-5/8 16EMD-3/4 16EMGS-3/4 16EMAF-3/4 1818D-1/4 1818GS-1/4 1818AF-1/4 1818D-3/8 1818GS-3/8 1818AF-3/8 1818D-1/2 1818GS-1/2 1818AF-1/2 1818D-5/8 1818GS-5/8 1818AF-5/8 1818D-3/4 1818GS-3/4 1818AF-3/4 1816D-1/4 1816GS-1/4 1816AF-1/4 1816D-3/8 1816GS-3/8 1816AF-3/8 1816D-1/2 1816GS-1/2 1816AF-1/2 1816D-5/8 1816GS-5/8 1816AF-5/8 1816D-3/4 1816GS-3/4 1816AF-3/4 2018D-1/4 2018GS-1/4 2018AF-1/4 2018D-3/8 2018GS-3/8 2018AF-3/8 2018D-1/2 2018GS-1/2 2018AF-1/2 2018D-5/8 2018GS-5/8 2018AF-5/8 2018D-3/4 2018GS-3/4 2018AF-3/4 2016D-1/4 2016GS-1/4 2016AF-1/4 2016D-3/8 2016GS-3/8 2016AF-3/8 2016D-1/2 2016GS-1/2 2016AF-1/2 2016D-5/8 2016GS-5/8 2016AF-5/8 2016D-3/4 2016GS-3/4 2016AF-3/4
— — — — — — 57117 — — 57118 — — 57119 — — — 57862 — — — — — — — — — — — — — 57130 — — 57131 57136 — 57132 57137 — 57133 — — 57134 — — — — — — — — — — — — — — — — — 57145 — — — — — 57147 57152 — 57148 57153 — 57149 57154 —
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Roll End Bearings for Steel Tubing ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Tube Size)
A*
C
D
E
1/4 3/8 2-3/4 16 ga.
1/2
1
5/16
3/16
5/8 2.750 O.D. 2.620 I.D.
3 16 ga.
3.000 O.D. 2.870 I.D.
3 11 ga.
3.000 O.D. 2.760 I.D.
4 11 ga.
4.000 O.D. 3.760 I.D.
4-1/2 11 ga.
4.500 O.D. 4.260 I.D.
P-1930-BG
3/4 1-1/2 3/8 1-1/2 1-5/8 1-1/2 1/2 1-1/2 1-5/8 1-1/2 5/8 1-1/2 1-5/8 1-1/2 3/4 1-1/2 1-5/8 1-1/2 3/8 1-1/2 1-5/8 1-1/2 1/2 1-1/2 1-5/8 1-1/2 5/8 1-1/2 1-5/8 1-1/2 3/4 1-1/2 1-5/8 2 1/2 2 2-1/8 2 5/8 2 2-1/8 2 3/4 2 2-1/8 2 1 2 2-1/8 2 1-1/4 2 2-1/8 1-3/4 1/2 1-3/4 1-7/8 1-3/4 5/8 1-3/4 1-7/8 1-3/4 3/4 1-3/4 1-7/8 1 1-3/4 1-7/8 1-3/4 1-1/4 1-3/4 1-7/8
04/10
3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 1/2 3/8 3/8 1/2
3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16 3/16
Catalog Number 2216D-1/4 2216GS-1/4 2216AF-1/4 2216D-3/8 2216GS-3/8 2216AF-3/8 2216D-1/2 2216GS-1/2 2216AF-1/2 2216D-5/8 2216GS-5/8 2216AF-5/8 2216D-3/4 2216GS-3/4 2216AF-3/4 2416D-3/8 2416GS-3/8 2416AF-3/8 2416D-1/2 2416GS-1/2 2416AF-1/2 2416D-5/8 2416GS-5/8 2416AF-5/8 2416D-3/4 2416GS-3/4 2416AF-3/4 2411D-3/8 2411GS-3/8 2411AF-3/8 2411D-1/2 2411GS-1/2 2411AF-1/2 2411D-5/8 2411GS-5/8 2411AF-5/8 2411D-3/4 2411GS-3/4 2411AF-3/4 3211D-1/2 3211GS-1/2 3211AF-1/2 3211D-5/8 3211GS-5/8 3211AF-5/8 3211D-3/4 3211GS-3/4 3211AF-3/4 3211D-1 3211GS-1 3211AF-1 3211D-1-1/4 3211GS-1-1/4 3211AF-1-1/4 3611D-1/2 3611GS-1/2 3611AF-1/2 3611D-5/8 3611GS-5/8 3611AF-5/8 3611D-3/4 3611GS-3/4 3611AF-3/4 3611GS-1 3611AF-1 3611D-1-1/4 3611GS-1-1/4 3611AF-1-1/4
Item † Code 57160 — — 57161 — — 57162 — — 57163 — — — — — 57607 57611 57615 57608 57612 57616 57609 57613 57617 57610 57614 57618 57175 57179 57183 57176 57180 57184 57177 57181 57185 57178 57182 57186 57187 57192 57197 57188 57193 57198 57189 57194 57199 57190 57195 57200 57191 57196 — — — — — — — — — — — — — —
F
C D
B
A
E
PRESS FIT INTO ROLL SIZE
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
*These dimensions are approximately 1/64" larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply. AF Bearings with 3" or larger O.D. will be supplied with an AF Flanged bushing inserted into a D or GS Roll End Bearing. For these AF Bearings it is recommended to reduce the shaft diameter or increase bushing I.D. to obtain proper clearance. BLIND BORE Bearings are available on special order. Minimum quantities will apply.
Boston Gear 800-825-6544
165
BOStonE Molded Plastic Bearings Roll End Bearings for Steel Tubing and Standard Pipe ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Pipe Size)
F
A*
C
1/4 1 Sch. 40
1.315 O.D. 1.049 I.D.
3/8
5/8
1/2
1/4
3/8
1
1-1/2 Sch. 40 1/2
C D
B
1.900 O.D. 1.610 I.D.
A
5/8
1/4 E
PRESS FIT INTO ROLL SIZE
3/8
1
1-1/2 Sch. 80 1/2
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
1.900 O.D. 1.500 I.D.
5/8
1/4
3/8 2 Sch.40
1/2
5/8 *These dimensions are approximately 1/64" larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply.
2.375 O.D. 2.067 I.D.
3/4
1
Catalog Number 8P40D-1/4 8P40GS-1/4 8P40AF-1/4 8P40D-3/8 3/16 1/8 8P40GS-3/8 8P40AF-3/8 8P40D-1/2 8P40GS-1/2 8P40AF-1/2 12P40D-1/4 12P40GS-1/4 12P40AF-1/4 12P40D-3/8 5/16 3/16 12P40GS-3/8 12P40AF-3/8 12P40D-1/2 12P40GS-1/2 12P40AF-1/2 12P40D-5/8 12P40GS-5/8 12P40AF-5/8 12P80D-1/4 12P80GS-1/4 12P80AF-1/4 12P80D-3/8 5/16 3/16 12P80GS-3/8 12P80AF-3/8 12P80D-1/2 12P80GS-1/2 12P80AF-1/2 12P80D-5/8 12P80GS-5/8 12P80AF-5/8 16P40D-1/4 16P40GS-1/4 16P40AF-1/4 16P40D-3/8 16P40GS-3/8 16P40AF-3/8 16P40D-1/2 5/16 3/16 16P40GS-1/2 16P40AF-1/2 16P40D-5/8 16P40GS-5/8 16P40AF-5/8 16P40D-3/4 16P40GS-3/4 16P40AF-3/4 D
E
Item † Code 57334 57337 — 57335 57338 — 57336 57339 — 57343 57347 57351 57344 57348 57352 57345 57349 —
57346 57350 57354 — — — — — — 57663 — — 57664 — — 57355 — — 57356 — — 57357 57362 — 57358 57363 — 57359 57364 —
BLIND BORE Bearings are available on special order. Minimum quantities will apply.
166
Boston Gear 800-825-6544
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Roll End Bearings for Standard Steel Pipe ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Pipe Size)
A*
C
D
E
1/4
3/8 2 Sch.10
1/2
1
5/16 3/16
5/8
2.375 O.D. 2.152 I.D.
3/4
1/4
3/8 2 Sch.80
1/2
1
5/16 3/16
5/8
2.375 O.D. 1.939 I.D.
3/4
1/4
3/8 2-1/2 Sch.40
1/2
1
5/16 3/16
5/8
2.875 O.D. 2.469 I.D.
3/4
3/8
1/2 3 Sch.40
5/8
3/4
3.500 O.D. 3.068 I.D.
P-1930-BG
1
04/10
1-1/4 1-1/4 1-3/8 1-1/4 1-1/4 1-3/8 1-1/4 1-1/4 1-3/8 1-1/4 1-1/4 1-3/8 1-1/4 1-1/4 1-3/8
3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2
3/16
3/16
3/16
3/16
3/16
Catalog Number 16P10D-1/4 16P10GS-1/4 16P10AF-1/4 16P10D-3/8 16P10GS-3/8 16P10AF-3/8 16P10D-1/2 16P10GS-1/2 16P10AF-1/2 16P10D-5/8 16P10GS-5/8 16P10AF-5/8 16P10D-3/4 16P10GS-3/4 16P10AF-3/4 16P80D-1/4 16P80GS-1/4 16P80AF-1/4 16P80D-3/8 16P80GS-3/8 16P80AF-3/8 16P80D-1/2 16P80GS-1/2 16P80AF-1/2 16P80D-5/8 16P80GS-5/8 16P80AF-5/8 16P80D-3/4 16P80GS-3/4 16P80AF-3/4 20P40D-1/4 20P40GS-1/4 20P40AF-1/4 20P40D-3/8 20P40GS-3/8 20P40AF-3/8 20P40D-1/2 20P40GS-1/2 20P40AF-1/2 20P40D-5/8 20P40GS-5/8 20P40AF-5/8 20P40D-3/4 20P40GS-3/4 20P40AF-3/4 24P40D-3/8 24P40GS-3/8 24P40AF-3/8 24P40D-1/2 24P40GS-1/2 24P40AF-1/2 24P40D-5/8 24P40GS-5/8 24P40AF-5/8 24P40D-3/4 24P40GS-3/4 24P40AF-3/4 24P40D-1 24P40GS-1 24P40AF-1
Item Code † — — — — — — — — — — — — — — — — — — — — — 57690 57695 — 57691 — — 57692 — — 57370 — — 57371 — — 57372 — — 57373 — — 57374 — — 57385 57390 57395 57386 57391 57396 57387 57392 57397 57388 57393 57398 57389 57394 57399
F
C D
B
A
E
PRESS FIT INTO ROLL SIZE
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF
*These dimensions are approximately 1/64" larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS and minimum quantities may apply. AF Bearings with 3" or larger O.D. will be supplied with an AF Flanged bushing inserted into a D or GS Roll End Bearing. For these AF Bearings it is recommended to reduce the shaft diameter or increase bushing I.D. to obtain proper clearance. BLIND BORE bearings are available on special order. Minimum quantities will apply.
Boston Gear 800-825-6544
167
BOStonE Molded Plastic Bearings Roll End Bearings for Standard Steel Pipe ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE †
B (Pipe Size)
A*
C
1-3/4 1/2 1-3/4 1-7/8 1-3/4 5/8 1-3/4 1-7/8 1-3/4 4 3/4 1-3/4 Sch. 40 1-7/8 1-3/4 1 1-3/4 1-7/8 1-3/4 4.500 O.D. 1-1/4 1-3/4 4.026 I.D. 1-7/8
F
D 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2 3/8 3/8 1/2
E 3/16
3/16
3/16
3/16
3/16
Catalog Number 32P40D-1/2 32P40GS-1/2 32P40AF-1/2 32P40D-5/8 32P40GS-5/8 32P40AF-5/8 32P40D-3/4 32P40GS-3/4 32P40AF-3/4 32P40D-1 32P40GS-1 32P40AF-1 32P40D-1-1/4 32P40GS1-1/4 32P40AF-1-1/4
Item † Code 57400 57405 57410 57401 57406 57411 57402 57407 57412 57403 57408 57411 57404 57409 57414
AF bearings with 3" or larger O.D. will be supplied with an AF Flanged bushing inserted into a D or GS Roll End Bearing. For these AF Bearings it is recommended to reduce the shaft diameter or increase bushing I.D. to obtain proper clearance.
C D
BLIND BORE bearings are available on special order — minimum quantities will apply. B
A
E
PRESS FIT INTO ROLL SIZE
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS Teflon filled Acetal (Teflon added to Delrin or Celcon) — AF *These dimensions are approximately 1/64” larger than listed. †Any item listed WITHOUT an Item Code Number is available on a SPECIAL ORDER BASIS – minimum quantities may apply.
168
Boston Gear 800-825-6544
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Extra Length – Blind Bore Bearing Inserts
Extra length Blind Bore inserts are available for Roll End Bearings from 1-3/4" to 6" outside diameter. All Blind Bore Bearing inserts listed below are made from Nylatron GS and are designed to press fit into 3/4" I.D. Roll End Bearings.
F
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Roll End Brg. Bore
A* 7/16 1/2 9/16 5/8 7/16 1/2 9/16 5/8
3/4
3/4
B
1
1
C
Max. Depth
1-1/2 1-3/8
2
1-7/8
D
1/16
1/16
Catalog Number
Item Code
F7612B F8612B F9612B F10612B F7616B F8616B F9616B F10616B
57482 57483 57484 – 57486 57487 57488 57489
C
B
BEARING
A
D
* These dimensions are approximately 1/64" larger than listed.
PRESS FIT INTO ROLL END BRG. BORE
Roll End Adapter for Hex Shaft Hex shaft adapter bushings are available for Roll End Bearings from 1" to 6" outside diameter. All hex shaft adapter bushings are made from Nylatron GS and are designed to provide a running fit with the Roll End Bearing bores listed below.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A Hex Shaft Size 5/16 7/16 5/8 11/16
Roll End Brg. Bore + 1/2 5/8 7/8* 7/8*
B
C
D
3/4 7/8 1/16 7/8 1 1/16 1-1/8 1-1/4 3/32 1-1/8 1-1/4 3/32
Catalog Number
Item Code
FH547 FH758 FH10710 FH11710
57479 57481 57707 57708
*7/8" I.D. Roll End Bearings are not available from stock. They may be machined from any 3/4" bore size. Prices on application. +I.D. of “AF” Roll End bearings may have to be enlarged approximately 1/64" to obtain proper clearance.
P-1930-BG
04/10
C
B
ADAPTOR BUSHING
A
D
RUNNING FIT WITH ROLL END BEARING BORE
Boston Gear 800-825-6544
169
BOStonE Molded Plastic Bearings Guide Roll Bearings
Nylatron GS Roll End Bearing has an oversized flange. Designed for use as a belt guide on conveyor rollers, or on light duty trolley conveyors. Using 2" 16 Gage Tubing.
F
Material Nylatron GS (Molybdenum disulfide filled nylon) — GS
3" O.D.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
3/8
1"
A
PRESS FIT INTO ROLL
A
1/2 5/8
Catalog Number G1616GS-1/2 G1616GS-5/8
Item Code 57704 57706
Also suitable to take 5/16, 3/8 and 7/16" hex shaft bushing.
1"
Rollers These rollers are made from roll end bearings shown on pages 162 through 168. (Ribbed Construction) ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
E
B
B
A*
C
D
E
.700
1/8
9/16
1/2
1/16
.800 3/16
9/16
5/8
1/16
.900
1/4
9/16
5/8
1/16
1.120
3/8
5/8
5/8
1/16
1.370
1/2
7/8
7/8
1/8
1.500
1/2
1
1
1/8
1.620
1/2
1
1
1/8
1.870
1/2
1
1
1/8
2.120
1/2
1
1
1/8
2.370
1/2
1
1
1/8
2.750
3/4
1-1/2 1-1/2 3/16
3.000
3/4
1-1/4
3.750
1
4.250
1
A
D
C
Material Delrin or Celcon (Acetals) — D Nylatron GS (Molybdenum disulfide filled nylon) — GS *These dimensions are approximately 1/64" larger than listed.
170
Boston Gear 800-825-6544
2 1-3/4
Made From Cat. No. 622D-1/8 622GS-1/8 720D-3/16 720GS-3/16 818D-1/4 818GS-1/4 1016D-3/8 1016GS-3/8 1216D-1/2 1216GS-1/2 1316D-1/2 1316GS-1/2 1416D-1/2 1416GS-1/2 1616D-1/2 1616GS-1/2 1816D-1/2 1816GS-1/2 2016D-1/2 2016GS-1/2 2411D-3/4 2411GS-3/4 24P40D-3/4 24P40GS-3/4 3211D-1
2
3/16
2
3/16
2
3/16 3611D-1
Catalog Number
Item Code
R700D R700GS R800D R800GS R900D R900GS R1120D R1120GS R1370D R1370GS R1500D R1500GS R1620D R1620GS R1870D R1870GS R2120D R2120GS R2370D R2370GS R2750D R2750GS R3000D R3000GS R3750D
57492 57493 57494 57495 57496 57497 57498 57499 57500 57501 57502 57503 57504 57505 57506 57507 57508 57509 57510 57511 57512 57513 57514 57515 57516
R4250D
57518
P-1930-BG
04/10
BOStonE Molded Plastic Bearings Shaft Clip
Secures round shaft to conveyor frame. Shaft can't turn or slide out. Clip required on one end only, conventional cotter pin can be used on other end.
F
Available from stock for 1/2" dia. shaft.
ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number
Item Code
SC-4
57490
1/8 DIA. 5/16 1 1/4
Stub Shaft for Rollers This stainless steel screw and stub assembly fits Blind Bore Roll End Bearings.
ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number
Item Code
SS-4
57491 1" 1/8 1/8 DIA. HOLE
CAP SCREW
1/2 DIA.
1/4 - 20 X 5/8 Lg
P-1930-BG
04/10
Boston Gear 800-825-6544
171
BOStonE Molded Nylon Bearings Plain Cylindrical Bearings ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
F
B
A
A
B
C
3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 7/8 15/16 1
5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1 1-1/16 1-1/8
5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1 1-1/16 1-1/8
Catalog Number
Item Code
NS35-2-1/2 NS46-3 NS57-3-1/2 NS68-4 NS79-4-1/2 NS810-5 NS911-5-1/2 NS1012-6 NS1113-6-1/2 NS1214-7 NS1416-8 NS1517-8-1/2 NS1618-9
56883 56884 56885 56886 56887 56888 56889 56890 56891 56892 56894 56895 56896
C
STANDARD TOLERANCES
Dimensions
Tolerance
A B
All
± .015
C
All
± .015
Flanged Type
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
D
B A
E
3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 7/8 15/16 1
B 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1 1-1/16 1-1/8
C
D
E
Catalog Number
Item Code
5/16 7/16 1/16 NF35-2-1/2 56897 3/8 1/2 1/16 NF46-3 56898 7/16 9/16 1/16 NF57-3-1/2 56899 1/2 5/8 1/16 NF68-4 56900 9/16 11/16 1/16 NF79-4-1/2 56901 5/8 3/4 1/16 NF810-5 56902 11/16 15/16 1/16 NF911-5-1/2 56903 3/4 7/8 1/16 NF1012-6 56904 13/16 1 1/16 NF1113-6-1/2 56905 7/8 1-1/16 1/16 NF1214-7 56906 1 1-3/16 1/16 NF1416-8 56908 1-1/16 1-1/4 1/16 NF1517-8-1/2 56909 1-1/8 1-5/16 1/16 NF1618-9 56910
C
STANDARD TOLERANCES
Dimensions A B D E C
172
Boston Gear 800-825-6544
Tolerance
All
± .015
All
± .015
P-1930-BG
04/10
BOStonE Molded Nylon Bearings Thrust Type ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
3/16 .189 1/4 .255 1/2 .503 9/16 .565 5/8 .630 3/4 .760 7/8 .890 1-1/4 1.290 1-1/2 1.555
3/4 .750 5/8 .620 13/16 .820 13/16 .812 1 1.000 1-1/16 1.063 1-1/8 1.125 2-1/8 2.140 2-1/16 2.058
1/16 .070 3/32 .097 3/32 .095 3/32 .095 3/32 .094 3/32 .094 3/32 .094 3/32 .098 1/8 .120
Catalog Number
Item Code
NT312
56911
NT410
56912
NT813
56913
NT913
56914
NT1016
56915
NT1217
56916
NT1418
56917
NT2034
56918
NT2533
56919
F
A
B
C
Tolerances apply to actual (decimal) dimensions.
STANDARD TOLERANCES Dimensions Tolerance
A B C
All
± .015
Cable Pulleys
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
C
G
F
H
J
1-1/4 1/4 .400 1/2 31/32 2-5/8 3/8 .500 017 3/4 2-1/8 2-5/8 1/2 .500 — 3/4 2-1/8
Cable Catalog Item Size Number Code 1/4 1/4 1/4
P1250-2 57522 P2625-3 57525 P2625-4 57526
STANDARD TOLERANCES
C
Dimensions
Tolerance
All
+ .005 to + .010
A J H TYP.
C
F TYP.
G
P-1930-BG
04/10
Boston Gear 800-825-6544
173
Engineering Information Sleeve Bearing Selection
F
The performance of a bearing is influenced by the conditions of speed, mating materials, clearances, temperature, lubrication, type of loading, etc. Of primary importance, is the maintenance of an oil film between the bearing surfaces to reduce friction, dissipate heat and retard wear by minimizing metal to metal contact. The most critical periods of operation are during starting and stopping, when the load may cause the bearing surfaces to come into contact with each other. For these reasons it is not practical to predict the wear rate of bronze bearings. The selection of the best bearing for an application can be a very complicated problem because the combined influence of the many factors affecting the operation is difficult to predict. The following information may be used as a guide for selecting a Bronze sleeve bearing which should satisfy the requirements. For practical reasons, the length of the bearing should normally be between one and two times the shaft diameter and the O.D. approximately 25% larger than the shaft diameter. Starting and Stopping/ Oscillatory Motion/Cyclical Overload conditions mean a full film of oil cannot be maintained. When this happens, metal-tometal contact occurs and causes bearing wear. Because of the continual interruption of the oil film, a larger safety factor is required when designing bearings for applications of this type. A lower permissible PV factor must be considered. Speed/Oil Viscosity must also be considered. The proper viscosity oil must be selected for each particular speed application, to achieve optimum bearing operation. For high speed applications, a light oil (150 SUS at 100°F) is required to keep internal oil friction at a minimum and assure proper metering of the oil to the bearing/shaft surface. For moderate speeds, a medium-viscosity oil (400 SUS at 100°F) is required. For very low shaft speeds under moderate or heavy loads, a heavier oil with an extreme pressure additive may be required to prevent complete oil film rupture and give sufficient lubrication for proper operation.
174
Boston Gear 800-825-6544
Shaft Consideration is extremely important in bearing applications. For optimum operation the shaft must be of proper material, hardness, surface finish, roundness and dimensions. Experience indicates that carbon steels, and preferably C1137, offer the best operating results. If stainless steel shafts are to be used, 400 Series is recommended. Austenitic 300 Series stainless steel tends to gall, which results in extreme wear and shortened life. If 300 Series stainless is required for its non-magnetic qualities, it is strongly recommended that shafts be work-hardened or chrome-plated for satisfactory operation. For best results, a shaft surface finish of 4 to 12 RMS is recommended. Nicks, gouges, and burrs should be avoided because they rupture the oil film and cause metal-to-metal contact. Shaft roundness and dimensions also contribute greatly to bearing life. The more round the shaft, the less the bearing and shaft wear, with longer life resulting. Dimensions also play an important role in operation and should always be in accord with the recommended bearing clearance charts. As stated, for practical reasons the bearing length should normally be between one and two times the shaft diameter. However, the recommended practice is by using the PV factor. PV is a means of measuring the performance capabilities of bearings. P is expressed as pressure or pounds per square inch on the projected area of the bearing. V is velocity in feet per minute of the wear surface (surface feet per minute). “PV” is expressed by the following: PV =
W πdn πWn .262Wn __ x ____ = ____ = ______ Ld 12 12L L
P
=
W _________________ A (Brg. I.D. x Length)
V
=
Surface velocity of the shaft, ft./min. (.262 x RPM x Shaft Dia.)
W =
Bearing load in pounds
L
=
Bearing length in inches
d
=
I.D. of bearing in inches (cancels out of formula)
n
=
Shaft speed, RPM
P-1930-BG
04/10
Engineering Information Sleeve Bearing Selection (Continued)
Each material has a specific maximum PV rating, as shown in the following Table. In addition, it also has a maximum pressure (P) and velocity (V) limitation. These values should not be exceeded. At no time can all maximum values be utilized. Material BEAR-N-BRONZ BOST-BRONZ BOST-BRONZ (Thrust Washers) F1 TN AF GS D N UHMW-PE Nyloil UHMW-PE with Internal Wear Strip Nyloil with Internal Wear Strip
Max. PV 75,000 50,000
Max. P 3,000 2,000
Max. V 750 1,200
10,000 20,000 10,000 8,000 4,000 3,000 3,000 2,300 16,000
2,000 1,000 800 750 500 480 480 1,400 2,000
1,200 400 300 300 300 300 300 100 400
4,000
1,400
100
16,000
2,000
400
All values based on 72°F ambient temperature and standard lubricant, when required. NOTE:
Above figures should be considered maximum and not to be exceeded.
For Bearing II— PV =
.262 x W2 x n L (In. of Lgth.)
F
= .262 x 157.5 x 500 1 = 20632 With the calculated PV of 6877, Bearing I, and 20,632, Bearing II, it can be seen from the Table, that a BOSTBRONZ bearing, one inch long, will not exceed Maximum PV. NOTE:
An increase in L will decrease the value of PV; conversely, a shortening of L increases the value of PV.
A check of PV calculations should now be performed to assure that Max. “P” and Max. “V” is not exceeded. PV Max. = P Max. x V Max. V = .262 x Shaft Dia. x n = .262 x .625 x 500 = 81.9 Bearing I
P=
PV 6877 = = 83.9 V 81.9
Bearing II
P=
PV 20632 = = 251.9 V 81.9
As can be seen, we have not exceeded any maximum values. We can now select an actual Bost-Bronz bearing.
EXAMPLE
Knowing:
Select a BOST-BRONZ (oil impregnated) bearing to satisfy the following conditions.
Shaft Dia. 5/8" = Bearing I.D. 5/8"
Known—
Bearing O.D. should be approximately 25% larger than I.D. Bearing O.D. = .625 x 1.25 = .781"
5/8" Shaft Diameter n = 500 RPM W1 = Load Bearing I = L I = 52.5 Lbs. W2 = Load Bearing II = L II = 157.5 Lbs. L = Length of Bearing
Referring to Bost-Bronz listings, Page 12, we find 5/8" I.D. bearings listed with O.D.’s from 3/4 to 1" and lengths from 1/2 to 2". From this selection of bearings, we may choose a bearing to fit the requirements. Since Bearing I is lightly loaded, for practical reasons, we select a bearing length of one times bearing I.D. We select a B1013-5 (5/8" I.D. x 13/16 O.D. x 5/8" long).
For Bearing I— PV =
.262 x W1 x n L (In. of Lgth)
= .262 x 52.5 x 500 1 = 6877
P-1930-BG
04/10
Boston Gear 800-825-6544
175
Engineering Information Sleeve Bearing Selection (Continued)
EXAMPLE (Continued):
F
For Bearing II we will select a length of two times bearing I.D. — B1013-10. (In actual practice, it may be more suitable to select one common size — B1013-10.) For a double-check of PV, we should use actual bearing selected: PV PV Actual = L (Actual Bearing) 6877 Bearing I PVA= = 10043 .625 20632 Bearing II PVA = = 16505 1.25
As a relative measure of the performance of one composite vs. another at the same operating conditions, the K factors have proven to be highly reliable. t = K (PVT) t = Wear in inches P =
W (Total Load) A (Brg. I.D. x Lgth.)
V = Velocity in ft. per minute (.262 x RPM x Shaft Dia.) T =
t KPV
T = Running time in hours
Actual PV values are below Maximum PV values shown in Table.
K = Wear rate factor
Sleeve Bearing Wear Life
Delrin or Celcon (D) Nylatron GS . . . (GS) Teflon filled Acetal (AF) Teflon filled Nylon (TN) Glass Filled Teflon ( F-1) Nylon
Wear life cannot be applied to BOST-BRONZ (oilimpregnated) or BEAR-N-BRONZ (SAE CA932/660) bearings. Under ideal conditions the shaft rides on a film of oil, and will give almost infinite life. If this film of oil is disrupted, intimate metal-to-metal contact results leading to eventual failure.
Non-Metallic and Non-Lubricated Bearings Wear rate is generally defined as the volumetric loss of material over a unit of time. Several mechanisms operate simultaneously to remove material from the wear interface, however, the primary mechanism is adhesive wear which is characterized by fine particles of polymer being removed from the surface. The presence of this powder is a good indication that the rubbing surfaces are wearing properly. The presence of melted polymer or large gouges or grooves at the interface is normally an indication that the materials are abrading and wearing and/or the pressure velocity limits of the materials are being exceeded. Once a Wear Rate factor (K) has been established it can be used by the engineer to calculate wear rates of bearings, gears, etc. However, because wear rates is affected by material types, finishes and hardness as well as environmental temperature and part design, large errors may result as end use variables begin to differ from those selected for the test procedure.
K 50 x 10 -10 35 x 10 -10 17 x 10 -10 13 x 10 -10 12 x 10 -10 12 x 10 -10
Values for plastic resins assume no trace of lubricant present. A simple calculation could be made as follows: Assumptions: 1. 2. 3. 4. 5. Problem:
1616D-1/2 Delrin Roll End Bearing .020 inch allowable wear limit 50 lbs. load on roll (25 lbs. per bearing) 100 RPM Normal environment with no lubrication
Find estimated wear life Solution: πWn π x 25 x 100 PV = = = 655 12L 12 x 1 t = K (PVT) t T = KPV
or
.020 x 655 50 x 10-10
T = 6100 hrs.
The use of low viscosity lubricant applied initially and/or periodically during operation of the bearing would extend the life several times. BostonE F-1 material is generally limited to a bearing maximum of 1,000 p.s.i. For more detailed design calculations Fig. 2 shows actual deformation values as a function of temperature and load. The coefficient of friction of BostonE F-1 varies with changes in load and speed when operated dry. Figure 3 shows the variation with load and Figure 4 shows the variation with speed.
176
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Sleeve Bearing Wear Life (Continued)
For optimum performance of BostonE F-1 bearings, the mating surface should be as hard as possible. Mild steel, however, will give satisfactory results.
500
Figures 1 through 6 apply to BostonE F-1 material only.
1000
F
300
200
100
15,000 PV
10,000 PV
SLIDING SPEED (F.P.M.)
400
A surface finish range of 8-16 micro-inches is preferred; however, good results will be obtained with finishes to 32 micro-inches.
800 0
0.1
0.2
0.3
0.4
TIME (HRS)
COEFFICIENT OF FRICTION (F) 600
FIGURE 4 — SPEED VS. FRICTION
Coefficient of Friction
400
Shaft Material 200
Load (psi)
Deformation (%)
Hardened Steel Stainless Steel Chromium Plated Steel Cast Iron Hard Anodized Aluminum Monel Cold Rolled Steel *Brass *Aluminum
78°F
300°F
*High rate of shaft wear
250 500 750 1000 1250 1500
.1 .3 .5 .8 1.1 1.6
.4 1.4 2.9 — — —
20,000 PV 0
.0020
.0040
.0060
RADIAL WEAR (IN.)
FIGURE 1 — TIME VS. RADIAL WEAR (UNLUBRICATED)
FIGURE 2 — DEFORMATION UNDER LOAD
2000
LOAD (P.S.I.)
1500
1000
500
0.15 0.15 0.16 0.19 0.20 0.23 0.25 0.33 0.35
FIGURE 5 — EFFECT OF MATING SURFACES WITH BOSTONE F-1
Coefficient of Expansion Temperature Range +68°F. to – 400° +68°F. to – 300° +68°F. to – 200° +68°F. to – 100° +68°F. to 0° +68°F. to +78° (approximate data) +78°F. to +100° +78°F. to +200° +78°F. to +300° +78°F. to +400° +78°F. to +500°
C.D. M.D. (all values are x 10-5) –1.8 –2.3 –2.9 –3.5 –4.4 12
–3.5 –4.0 –4.3 –4.8 –5.9 25
3.5 3.5 3.6 4.2 5.0
6.0 6.2 7.0 7.8 8.5
M.D. = Molded Direction (parallel to length of molded or extruded rod or tube)
0
.05
.10
.15
.20
COEFFICIENT OF FRICTION (F)
C.D. = Cross Direction (perpendicular to length of molded or extruded rod or tube) All tubes are approximately ± 5%.
FIGURE 3 — LOAD VS. FRICTION
P-1930-BG
04/10
FIGURE 6 — COEFFICIENT OF LINEAR THERMAL EXPANSION
Boston Gear 800-825-6544
177
Engineering Information Lubrication – BOST-BRONZ
F
All standard BOST-BRONZ bearings, bars and plates are impregnated with a high grade, oxidation-resistant mineral oil of SAE30 (ISO 100) viscosity. If properly stored, BOST-BRONZ parts retain their oil supply indefinitely. To prevent loss of lubricant, BOST-BRONZ should be stored in non-absorbent materials (metal, plastic, or suitably lined containers, etc.) The bearings should be covered to keep out dirt and dust.
Immerse parts in a good grade of oil solvent, such as lead-free gasoline, naptha, carbon tetrachloride or alcohol. Change solvent often, until solvent appears clear. Agitation will hasten the process. RE-OILING: BOST-BRONZ parts may be re-impregnated by submerging in oil (pre-heated to about 150°F) for approximately 30 minutes. More time should be allowed for larger parts.
REMOVING LUBRICANT: If it becomes necessary to remove the oil from BOST-BRONZ, for example to replace with another type or viscosity of lubricant, the following procedure may be used.:
Supplementary Lubrication The following designs illustrate simple, effective arrangements for providing supplementary lubrication.
OIL CUP
BOST-BRONZ BEARING
BOST-BRONZ BEARING
BOST-BRONZ BEARING
BOST-BRONZ BEARINGS
OIL RESERVOIR FELT WICK
OIL SATURATED FELT WASHER
Lubrication – BEAR-N-BRONZ The maintenance of an oil film between the shaft and bearing surfaces is extremely important, serving to reduce friction, dissipate heat, and retard wear by minimizing any metal to metal contact.
Lubricant is usually supplied into the bearing from an oil cup or fitting through an oil hole. The drawings below illustrate two typical methods.
GREASE FITTING
SLEEVE BEARING
SLEEVE BEARING
A. Oil Cup
B. Oil or Grease Fitting
Oil is fed from the oil cup to the bearing by gravity.
Lubricant is fed through the fitting under pressure and distributed through grooves by the rotation of the shaft.
178
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Lubrication – BEAR-N-BRONZ (Continued)
Grooving 1. An oil feeder hole is normally sufficient for small bearings under light loads. The oil hole should be in a position to introduce the lubricant to the non-loaded area of the bearing. The lubricant will then normally be carried to the loaded area by the rotation of the shaft. For larger bearings under heavy loads, it may be desirable to facilitate the flow of lubricant to the pressure area by means of grooves machined into the bearing surface.
3. Very long bearings may require two feeder holes connected by one straight (axial) groove. 4. Oil grooves should stop short of the bearing ends to minimize oil leakage. 5. Grease lubricants are normally restricted to applications subjected to heavy loads at low speeds. Grease should be distributed under pressure along oil grooves to the loaded area. Type VI or Type VII grooves may be used for grease lubrication. Below are illustrations of some popular styles of oil grooves:
2. Type I or Type II grooves have proven adequate for most applications requiring an oil groove. In either case, the oil feed hole introducing the lubricant should always be located in the unloaded bearing area.
Depth of oil groove is 1/8" max. if wall permits. On thin wall bearings depth of groove is normally less than 1/2" wall thickness. When applicable groove is located 1/8" from ends.
P-1930-BG
04/10
Boston Gear 800-825-6544
179
F
Engineering Information Shaft Clearances
The following graphs may be used as a guide to determine shaft clearance for proper running fit.
F BOST-BRONZ
BEAR-N-BRONZ .010
M
U XIM
.003
MA
.002
MEAN
MINIMUM
.001 .000
.007 M
.006 U
.004
.008
.005
IM
.005
.009
AX
.006
.004
M
SHAFT CLEARANCE IN INCHES
SHAFT CLEARANCE IN INCHES
.007
.003
M
MU
I MIN
.002 .001 .000
0
.5 1.0 1.5 2.0 2.5 3.0 3.5
0 .5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SHAFT DIAMETER IN INCHES
SHAFT DIAMETER IN INCHES
Plastics
APPROX. SHAFT CLEARANCE IN INCHES
.030
.025 UM
XIM
MA
.020
MAXIMUM F-1
.015 UM
MINIM
.010
MINIMUM F-1
.005
.000 0
.5
1.0
1.5
2.0
SHAFT DIAMETER IN INCHES
180
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Press Fit Allowances
The allowance for press fit into a housing will vary depending upon bearing size, wall thickness, housing material, and housing construction. The accompanying graphs will be a useful guide in determining allowances for press fits.
BEAR-N-BRONZ
BOST-BRONZ When a BOST-BRONZ bearing is pressed into a housing, the inside diameter (I.D.) will close-in (becoming smaller). The amount will depend upon the same factors influencing the Press Fit, but will average approximately 75% of the Press Fit allowance.
.005
.004 PRESS FIT IN INCHES
F
M
MU
I AX
.003
M
.002
HO
US
IN G
.007
0
.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 HOUSING DIAMETER IN INCHES
M FT
L EE
OR .F
R
N
AX
.000
IN
.004
HO
ST
O
RO .I
AX
M
.003
Plastics
.002
Due to normal variations in molded bearings, practicality dictates the measuring of actual bearing O.D. and adjusting bore size accordingly.
.001
IMU
MIN
For this reason, the minimum required press fit depicted in graph, for F-1 material and other plastic material is approximate and may be used as a guide.
G
US
SO
.005
M
MIN
UM PRESS FIT IN INCHES
IM
.001
ET AL
.006
M
.000 0
.5
1.0
1.5
2.0
2.5
3.0
3.5
HOUSING DIAMETER IN INCHES
.010 .009
UM
.007 NIM
.006
MI
PRESS FIT IN INCHES
.008
.005 .004 .003 .002
NI MI
.001
M
MU
F-1
ON
LY
.000 0
.5
1.0 1.5 2.0 2.5 3.0 3.5
HOUSING DIAMETER IN INCHES
P-1930-BG
04/10
Boston Gear 800-825-6544
181
Engineering Information Machining
In cases where it is desired to alter a standard stock bearing or to manufacture parts from a bronze bar or plate stock, the following machining practices are suggested.
F
BOST-BRONZ BOST-BRONZ may be readily machined. For best results, use carbide tools. For finishing cuts on bearing surfaces, the cutting tool should be extremely sharp. Use feeds and speeds that are normal for machining regular bronze. Finish with a light cut (up to .005"). This method avoids the pulling or spreading of metal over the surface pores. Cutting oils or coolants should not be used. After machining, parts should be reoiled, using a good grade of oxidation-resistant mineral oil of about SAE20 (ISO 68) viscosity. For re-oiling procedure, see lubrication, Page 178.
BEAR-N-BRONZ The use of carbide tools or high speed tools is recommended for machining Bear-N-Bronz. Carbide tools should be used at speeds of 500 to 1000 surface feet per minute. High speed steel tools should be used to 200 to 500 surface feet per minute. Either tool should be held to a minimum clearance angle for best results. Cutting solutions are not required.
Assembly and Sizing – BOST-BRONZ In most instances, sizing the bore of BOST-BRONZ bearing is not necessary. The desired inside diameter will be obtained by proper press fit (and close-in) at assembly. In applications where sizing is necessary, it may be accomplished during assembly by the use of a shouldered sizing arbor, as illustrated in Figure 1. The arbor should be ground and lapped to a size slightly larger (.0002" to .0003" approx.) than the hole desired. A multiple step burnishing tool (see Figure 2) may also be used to size the hole in BOST-BRONZ bearings after assembly.
.9960" DIA 3/64" 6"
1.0022" DIA 1.0023" DIA 1.0023" DIA 1.0020" DIA 1.0015" DIA 1.0010" DIA 1.0000" DIA .9990" DIA
1/32" RAD
3/32"
ARBOR ARBOR .9960" DIA
BEAR-N-BRONZ BOST-BRONZ BEARING BEARING
PILOT
FIGURE 2.
HOUSING HOUSING
FIGURE 1.
Assembly – BEAR-N-BRONZ
ARBOR ARBOR
BEAR-N-BRONZ can be easily assembled by using a shouldered arbor, as illustrated, to maintain proper bearing alignment. A steady, even pressure should be applied. The arbor diameter should be of a size to allow for close-in of bearing I.D. at assembly. The surface of the arbor should be lightly oiled to facilitate withdrawal after assembly.
BEAR-N-BRONZ BOST-BRONZ BEARING BEARING
HOUSING HOUSING
182
Boston Gear 800-825-6544
P-1930-BG
04/10
Anti-Friction Bearings
F
Boston Gear’s line of unmounted, inch size ball bearings, rod ends, spherical and linear bearings, give the designer freedom to choose from a wide range of quality bearing products that will resolve numerous application problems.
Boston Gear’s inch size ball bearings are offered in Precision Ground, Semi- and Unground Radial and Thrust bearings. Our rod end and linear bearings are offered in Precision and Commercial Series.
Ball Bearings Boston Ball Bearings provide improved performance over a wide range of operating conditions. Major features include: Honed raceways on precision ball bearings for maximum life and smoother, quieter operation. Superior, low friction (low torque) seals, to more effectively exclude foreign matter and retain lubricant over a longer period. The line of Ball Bearings include close tolerance precision units and inexpensive steel assemblies of the semi-ground type. These anti-friction items, available quickly from stock, make it easier to use a superior bearing “exactly right” for the majority of applications.
P-1930-BG
04/10
Boston Gear 800-825-6544
183
Anti-Friction Bearings Ball Bearings (Continued)
The bearings listed in this catalog are made from steel of various analyses. Carburizing grades are case hardened to the desired depths and hardness values, insuring high resistance to wear and breakdown. High carbon chrome alloy steels are through hardened. If you have a special material application, Boston Gear engineers will welcome the opportunity to help you make a proper bearing selection.
F
Bearings in this catalog may be selected according to finish or accuracy: ground bearings are available in the radial and thrust designs primarily. With boundary dimensions and internal fit-up held to exacting tolerances and with ground and polished ball grooves, ground bearings are recommended for applications requiring greater speeds and loads and where quiet accurate operation is essential. Normal tolerance level is .005"/.0010". Unground bearings are designed for applications where speeds and loads are moderate and the requirements of running accuracy and noise level do not warrant the more expensive ground precision bearing. The three basic design types are available. Normal tolerance level is .005"/.010".
Rod End and Spherical Bearings Boston Gear’s broad line of rod end and spherical bearings serve many markets, which include textile, agriculture and off-highway vehicles along with military.
184
Boston Gear 800-825-6544
P-1930-BG
04/10
Anti-Friction Bearings 1600 Series Radial Ball Bearings; Ground, Single Row HIGH QUALITY INCH DIMENSIONAL BEARINGS for adaptation to many precision bearing applications. Suitable for speeds in the neighborhood of 5000 R.P.M. IMPROVED BALL GROOVE FINISH for smoother, quieter operation.
F
GROUND BORES held to a tolerance of + .0000" to –.0005" on all sizes, 1/4" bore and over. NYLON BALL RETAINERS (TN) furnished as standard. Steel retainers (J) available on special production order. GREASE PACKED as standard on Types DC and DS. Types SC, SS and NS can be grease packed on special order. NYLON SEALS more effectively retain lubricant and exclude foreign matter. SPECIAL FEATURES including dimensions, tolerances, etc. available on special order.
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore .2500 .3125 .3750 .3125 .3750 .4375 .3750 .4375 .5000 .4375 .5000 .6250 .6250 .7500 .6250 .7500 .7500 .8750 1.0000 1.1250 1.2500 1.2500
Double Shield Catalog Item Number Code
Double Sealed Catalog Item Number Code
1602DS 1603DS 1604DS 1605DS 1606DS 1607DS 1614DS 1615DS 1616DS 1620DS 1621DS 1623DS 1628DS 1630DS 1633DS 1635DS 1638DS 1640DS 1641DS 1652DS 1654DS 1657DS
1602DC 1603DC 1604DC 1605DC 1606DC 1607DC 1614DC 1615DC 1616DC — 1621DC 1623DC 1628DC 1630DC 1633DC 1635DC 1638DC 1640DC 1641DC 1652DC 1654DC 1657DC
50724 50725 50726 50727 50728 50729 50730 50731 50732 50733 50734 50736 50737 50738 50739 50740 50741 50742 50743 50744 50745 50746
50701 50702 50703 50704 50705 50706 50707 50708 50709 — 50710 50712 50713 50714 50715 50716 50717 50718 50719 50720 50721 50722
NOTE: Dimensions and load data on next page.
Seal and Shield Arrangements
TYPES SC, SS and NS are available via special order only
P-1930-BG
04/10
DOUBLE SEALED
DOUBLE SHIELD
SINGLE SEAL
SINGLE SHIELD
NO SHIELDS
DC
DS
SC
SS
NS
Boston Gear 800-825-6544
185
Anti-Friction Bearings 1600 Series Radial Ball Bearings; Ground, Single Row ALL DIMENSIONS IN INCHES
Basic Bearing No. 1602 1603 1604 1605 1606 1607 1614 1615 1616 1620 1621 1623 1628 1630 1633 1635 1638 1640 1641 1652 1654 1657
C
F
B A
R
STANDARD TOLERANCES Dimensions Tolerance
A B
2500–1.2500 +.0000 to – .0005 .6875–1.7500 +.0000 to – .0005 2.0000–2.5625 +.0000 to – .0006
C
All
+.000 to – .005
The indicated load ratings are based on 2500 hours average life. (L50) to determine the load ratings at 3500 and 5000 hours, 90 percent and 80 percent respectively, of the above ratings should be used.
186
Boston Gear 800-825-6544
R Radius .6875 1/4+ .012 .012 .8750 9/32++ .015 .012 .9063 5/16 .015 .015 B
.2500 .3125 .3750 .3125 .3750 .4375 .3750 .4375 .5000 .4375 .5000 .6250 .6250 .7500 .6250 .7500 .7500 .8750 1.0000 1.1250 1.2500 1.2500
C
Balls No. Dia. 6 1/8 7
5/32
9
1/8
1.1250
3/8
.025
7
3/16
1.3750
7/16
.025
8
15/64
1.6250
1/2
.025
8
1/4
1.7500
1/2
.025
8
1/4
2.0000
9/16
.035
10
1/4
2.5000
5/8
.035
10
5/16
.035
9
3/8
2.5625 11/16
*Maximum fillet on shaft or in housing which bearing corner will clear. + Width SC & DC = 5/16" ++ Width SC & DC = 11/32"
For recommended shaft and housing fits, see engineering section, page 238.
Load Data
A
Basic Bearing Number 1602 1603 1604 1605 1606 1607 1614 1615 1616 1620 1621 1623 1628 1630 1633 1635 1638 1640 1641 1652 1654 1657
50 230
100 185
Radial Capacity (Lbs.) Revolutions Per Minute 300 500 1200 1800 130 110 80 70
380
300
210
175
130
305
245
170
140
530
420
290
860
690
980
2500 65
5000 50
Limiting Thrust (Lbs.) 42
115
105
80
75
105
95
85
65
65
245
185
160
145
115
110
475
400
300
260
235
185
200
780
540
460
340
300
265
210
225
1140
905
630
530
395
345
310
245
280
1695
1345
935
790
590
515
460
365
440
2200
1750
1215
1025
765
665
600
475
570
P-1930-BG
04/10
Anti-Friction Bearings 7500 Series Radial Ball Bearings; Ground, Single Row NYLON BALL RETAINERS (TN) standard on all sizes. SINGLE LIP CONTACT SEALS effectively retain lubricant and exclude foreign material.
F
GREASE PACKED as standard on all “Double Sealed” Type DL and DLG. SPECIAL FEATURES including dimensions, tolerances, single or without seals, steel retainers available on special order if quantity warrants. SNAP RINGS included on all Type DLG sizes. Type DL sizes include snap ring groove but no snap rings furnished. E C
D
G H
D
B
STANDARD TOLERANCES Dimensions Tolerance All +.0000 to –.0005 A 1.7500 +.0000 to –.0005 B 2.0000-2.5625 +.0000 to –.0006
J
A F
C E
All All
+.000 to –.005 +.000 to –.005
G
All
±.005
R
7500 DL DOUBLE SEAL
7500 DLG DOUBLE SEAL WITH SNAP RING
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
.5000 .6250 1.7500 .7500 1.0000 2.0000 1.2500 2.5625
C
D
E
F
G
H
J
R Radius *
Balls No.
5/8 1/16
3/4
.993 .136 .042 1-59/64
.035
8
5/8 1/16 3/4 1/16
3/4 7/8
1.290 .136 .042 2-5/32 1.631 .190 .065 2-49/64
.035 .035
10 9
DL Series Catalog Item Dia. Number Code
DLG Series Catalog Item Number Code
7508DL 1/4 7510DL 7512DL 1/4 7516DL 3/8 7520DL
7508DLG 7510DLG 7512DLG 7516DLG 7520DLG
50587 50588 50589 50591 50592
50581 50582 50583 50585 50586
*Maximum fillet on shaft or housing which bearing will clear. For recommended shaft and housing fits, see engineering section, page 238.
Load Data Basic Bearing Number 7508-7512 7516 7520
P-1930-BG
50 1180 1365 2640
04/10
100 940 1085 2100
300 650 750 1460
Radial Capacity (Lbs.) Revolutions Per Minute 500 1000 1200 1800 2500 550 435 410 360 320 635 505 475 415 370 1230 975 915 805 715
3600 285 330 635
5000 255 295 570
Max. Thrust Lbs. 340 375 740
The indicated load ratings are based on 2500 hours average life (L50). To determine the load ratings at 3500 and 5000 hours, 90 percent and 80 percent respectively, of the above ratings should be used.
Boston Gear 800-825-6544
187
Anti-Friction Bearings 7600 Series Radial Ball Bearings; Ground, Single Row; Extended Inner Race NYLON BALL RETAINERS (TN) standard on all sizes. SINGLE LIP CONTACT SEALS effectively retain lubricant and exclude foreign material.
F
GREASE PACKED as standard on all “Double Sealed” Type DL and DLG. SPECIAL FEATURES including dimensions, tolerances, single or without seals, steel retainers available on special order if quantity warrants. SNAP RINGS included on all Type DLG sizes. Type DL sizes include snap ring groove but no snap rings furnished. G
K
STANDARD TOLERANCES
Dimensions A
D
C
L
Tolerance
M
All +.0008 to –.0000 1.7500 +.0000 to –.0005 2.0000-2.5625 +.0000 to –.0006
B C E G
All All All
+.000 to –.005 +.000 to –.005 ±.005
K
All
+.000 to –.005
H N
B
J
A
F
R 7600 DLG DOUBLE SEAL WITH SNAP RING
7600 DL DOUBLE SEAL
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
F
G
H
J
K
L
M
N
R* Balls Radius No. Dia. *
.6250 1.7500 5/8 1/16 .993 .136 .042 1-59/64 1.092 .405 .233 10-32 .035 .7500 1.0000 2.0000 5/8 1/16 1.290 .136 .042 2-5/32 1.179 .492 .261 10-32 .035 1.2500 2.5625 3/4 1/16 1.631 .190 .065 2-49/64 1.417 .605 .261 1/4-28 .035
8
1/4
10 9
1/4 3/8
DL Series Catalog Item Number Code
DLG Series Catalog Item Number Code
7610DL 7612DL 7616DL 7620DL
7610DLG 7612DLG 7616DLG 7620DLG
50600 50601 50603 50604
50594 50595 50597 50598
*Maximum fillet on shaft or housing which bearing will clear. For recommended shaft and housing fits, see engineering section, page 238.
Load Data The indicated load ratings are based on 2500 hours average life (L50). To determine the load ratings at 3500 and 5000 hours, 90 percent and 80 percent respectively, of the above ratings should be used.
188
Boston Gear 800-825-6544
Basic Bearing Number
50
7610-7612 1180 7616 1365 7620 2640
100
Radial Capacity (Lbs.) Revolutions Per Minute 300 500 1000 1200 1800 2500
3600
5000
Max. Thrust (Lbs.)
940 1085 2100
650 550 750 635 1460 1230
285 330 635
255 295 570
340 375 740
435 505 975
410 475 915
360 415 805
320 370 715
P-1930-BG
04/10
Anti-Friction Bearings 6900 Series Radial Ball Bearings; Ground, Single Row; Flange Mounted AVAILABLE AS COMPLETE ASSEMBLY, BEARING only or HOUSING only. INNER RACE includes 2 setscrews.
F
GREASE PACKED, COMPOSITION SEALED. NYLON RETAINERS (TN) furnished as standard.
C
M
J K
D
L N
C
O
STANDARD TOLERANCES
H
A
E
A S
Dimensions All
B
Tolerance +.005 to –.000
.9062-1.6250 +.0000 to –.0005 2.000 +.0000 to –.0006
B
G
C
All
+.000 to –.005
F
P
ASSEMBLY
BEARING ONLY
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
E
F
G Bolt Ctrs.
H
J+
K
L
M
N
O
P
S
.3750 .9062 5/16 11/16 .555 3/8 1-7/8 2-1/2 1-1/8 11/32 11/32 11/16 .035 8-32 5/16 .000 .5000 1.6250 1/2 1 .995 1/2 2-7/8 3-3/4 1-7/8 7/16 11/16 1 .062 1/4-28 7/16 .010 .6250 .7500 1/4-28 2.0000 9/16 1-1/16 1.293 1/2 3-1/4 4-1/8 2-1/4 7/16 11/16 1-1/8 .062 7/16 1/16 1.0000 10-32
Assembly* Bearing Only Catalog Item Catalog Item Number Code Number Code 6906 6908 6910 6912 6916
50572 50574 50576 50578 50580
6906B 6908B 6910B 6912B 6916B
50571 50573 50575 50577 50579
*Housings do not have Catalog Numbers. To order specify bearing size-housing. Example: 6906-Housing. + J dimension is the overall width.
Basic Bearing Number 6906 6908-6910 6912 6916
P-1930-BG
04/10
50 305 735 850 1140
Radial Capacity (Lbs.) Revolutions Per Minute 100 500 245 140 585 340 675 395 905 530
Load Data 1800 95 225 260 345
The indicated load ratings are based on 2500 hours average life (L50). To determine the load ratings at 3500 and 5000 hours, 90 percent and 80 percent respectively, of the above ratings should be used.
Boston Gear 800-825-6544
189
Anti-Friction Bearings 3000 Series Radial Ball Bearings; Semi-Ground, Single Row LOW COST INCH DIMENSIONAL BEARINGS similar to 1600 Series in construction and dimensions and suitable for speeds up to 2500 R.P.M. NYLON BALL RETAINERS (TN) furnished as standard. Steel retainers (J) available on special production order.
F
GREASE PACKED as standard on Types DC and DS. Types SC, SS and NS can be grease packed on special order. NYLON SEALS more effectively retain lubricant and exclude foreign matter. SPECIAL FEATURES including dimensions, tolerances, etc. available on special order.
ORDER BY CATALOG NUMBER OR ITEM CODE
Double Shield Catalog Item Number Code
Double Sealed Catalog Item Number Code
1/4
3002DS
50768
3002DC
3/8
3004DS
50770
—
—
3/8
3014DS
50774
3014DC
50755
1/2
3016DS
50776
3016DC
50757
1/2
3021DS
50778
3021DC
50758
5/8
3023DS
50779
3023DC
50759
5/8
3028DS
50780
3028DC
50760
3/4
3030DS
50781
3030DC
50761
3/4
3035DS
50783
3035DC
50763
1
3041DS
50786
3041DC
50766
Bore
50749
Seal and Shield Arrangements
DOUBLE SEALED
DOUBLE SHIELD
SINGLE SEAL
SINGLE SHIELD
NO SHIELDS
DC
DS
SC
SS
NS
190
Boston Gear 800-825-6544
TYPES SC, SS and NS are available via special order only.
P-1930-BG
04/10
Anti-Friction Bearings 3000 Series Radial Ball Bearings; Semi-Ground, Single Row ALL DIMENSIONS IN INCHES
Basic Bearing Number 3002 3004 3014 3016 3021 3023 3028 3030 3035 3040 3041
Balls
A
B
C
R * Radius
No.
Dia.
1/4 3/8 3/8 1/2 1/2 5/8 5/8 3/4 3/4 7/8 1
11/16 7/8
1/4+ 9/32++
.012 .012
6 7
1/8 5/32
1-1/8
3/8
.025
7
3/16
1-3/8
7/16
.025
8
15/64
1-5/8
1/2
.025
8
1/4
1-3/4
1/2
.025
8
1/4
2
9/16
.035
10
1/4
C
F B A
R
*Maximum fillet on shaft or in housing which bearing corner will clear. + Width SC & DC = 5/16" ++ Width SC = 11/32"
STANDARD TOLERANCES
Dimensions A B C
Tolerance
All 11/16-1-3/4 2
+.005 to –.000 +.0000 to –.0005 +.0000 to –.0006
All
±.005
For recommended shaft and housing fits, see engineering section, page 238.
Basic Bearing Number 3002 3004 3014 3016 3021 3023 3028 3030 3035 3040 3041
P-1930-BG
50 150 250
Radial Capacity (Lbs.) Revolutions Per Minute 100 500 1800 120 70 45 200 120 80
350
280
165
105
95
75
575
460
270
175
155
135
650
520
305
200
180
150
760
605
355
230
205
185
04/10
2500 40 70
Limiting Thrust (Lbs.) 30 50
Load Data Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation.
Boston Gear 800-825-6544
191
Anti-Friction Bearings Flanged 400F Series Radial Ball Bearings; Unground, Single Row
FULL BALL TYPE (V) without retainer. SUITABLE for SPEEDS up to 1200 RPM.
F
SOFT STEEL BAND on O.D. permits bearing to be pressed in a housing without the necessity of close housing tolerances. E C
F G
STANDARD TOLERANCES
Dimensions A All B All C
B A
D
Tolerance +.005 to –.000 +.005 to –.000
All
±.010
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
E
F
G
1/4 3/8 1/2 1/2 5/8 1/2 3/4 3/4 1
11/16 29/32 1-1/8 1-3/8 1-3/8 1-1/2 1-3/4 2 2
13/65 17/64 .305 11/32 11/32 3/8 .462 13/32 13/32
3/4 1 1-1/4 1-1/2 1-1/2 1-21/32 1-15/16 2-1/8 2-1/8
1/4 .350 7/16 .475 .475 11/16 37/64 9/16 5/8
3/64 .088 .132 1/8 1/8 .320 1/8 5/32 7/32
0 .048 1/16 1/32 1/32 1/4 1/64 1/16 1/8
Load Data Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation.
Basic Bearing Number 5561 5543 5368-5491 5881-5273 5327 5891 5875-5418
192
50 110 167 200 375 492 625 757
Radial Capacity (Lbs.) Revolutions Per Minute 200 600 53 30 80 45 96 54 180 101 236 132 300 168 362 204
Boston Gear 800-825-6544
Balls Number Dia. 10 15 18 15 15 11 14 17 17
1/8 1/8 1/8 3/16 3/16 1/4 1/4 1/4 1/4
Catalog Number
Item Code
5561 5543 5491 5881 5273 5327 5891 5875 5418
50566 50565 50564 50569 50559 50561 50570 50568 50563
Typical Application Flanged Series
1200 21 32 38 71 92 177 142
P-1930-BG
04/10
Anti-Friction Bearings AO/SAO Series Thrust Ball Bearings; Ground, Unbanded
Hardened Alloy Steel — AO Series Hardened Stainless Steel — SAO Series
F
FOR LIGHT LOADS HIGH QUALITY HARDENED STEEL BALLS, retained in a nylon cage. HARDENED THRUST WASHERS, are ground both sides to provide smooth, flat, parallel ball raceway surfaces. QUALITY and NUMBER OF BALLS assure high load carrying capacity. NYLON RETAINER assures minimum frictional losses.
STANDARD TOLERANCES
Dimensions A* All B All C All
B
Tolerance +.002 to +.007 +.000 to –.005 +.000 to –.010
*AO/SAO 16 +.002 to +.010 C
A
ALL DIMENSIONS IN INCHES ORDER BY ITEM CODE (2 WASHERS AND 1 NYLON CAGE)
Balls A
B
C Number
Diameter
Basic Bearing Number
AO Series Alloy Washer Nylon Cage
SAO Series Stainless Steel Washer Nylon Cage
3/16 1/4 5/16
7/16 9/16 5/8
3/16 7/32 1/4
9 10 10
1/16 3/32 3/32
AO/SAO1 AO/SAO5 AO/SAO8
06724 06726 06728
56807 56808 56809
06760 06762 06764
56813 56814 56815
3/8 1/2
11/16 7/8
9/32 3/8
12 10
3/32 1/8
AO/SAO10 AO/SAO16
06730 06734
56810 56812
06766 06770
56816 56818
Load Data The indicated load ratings are based on 2500 hours average life (L50). To determine the load ratings at 3500 and 5000 hours, 90 percent and 80 percent respectively, of the above ratings should be used. Basic Bearing Number
P-1930-BG
04/10
50
Thrust Capacity (Lbs.) Revolutions Per Minute 100 500 1000
AO/SAO1 AO/SAO5 AO/SAO8
30 64 68
25 56 60
14 31 34
11 25 27
AO/SAO10 AO/SAO16
85 250
72 125
42 70
32 58
Boston Gear 800-825-6544
193
Anti-Friction Bearings 600 Series Thrust Ball Bearings; Unground, Banded FULL BALL TYPE (V) without retainer. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
F
B A C A1 STANDARD TOLERANCES Dimensions Tolerance
A A1 B
All All All
–.000 to +.010 ±.010 ±.010
C
All
±.010
Balls No. Dia.
Catalog Number
Item Code
.333 .359
10 14
5/32 5/32
601 602
50537 50538
55/64 1-17/64 1
.281 .437 .344
15 10 12
1/8 1/4 3/16
602-3/4 603 603-1/4
50540 50541 50542
.656 .656
1-1/8 1-27/64
.344 .456
16 12
5/32 1/4
605 606
50543 50544
.750 .875
.775 .900
1-21/32 1-57/64
.545 .594
15 17
1/4 1/4
607 608
50545 50547
1.000 1.000 1.016
1.075 1.031 1.031
2 1-31/32 1-3/4
.640 .625 .625
12 18 16
3/8 1/4 1/4
609 610 610-1/4
50548 50549 50550
1.063 1.125
1.094 1.150
1-31/32 2-3/32
.625 .625
18 19
1/4 1/4
611 613
50551 50552
1.457 1.500
1.462 1.525
2-15/32 2-19/32
.625 .625
23 25
1/4 1/4
619 621
50555 50556
A
A1
B
C
.250 .375
.275 .400
27/32 1-3/64
.453 .500 .500
.478 .525 .525
.625 .625
Load Data Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation.
10
Thrust Capacity (Lbs.) Crane Revolutions Per Minute Hook 50 100 250 500 1000
601
304
246
182
98
71
51
912
602
426
344
254
138
100
71
1277
602-3/4 603 603-1/4
292 780 526
236 630 425
174 465 314
94 252 170
68 182 123
48 129 87
873 2325 1570
605 606
487 936
394 750
291 558
158 302
114 218
81 155
1460 2790
607 608
1170 945 1326 1071
698 791
378 428
273 309
194 220
3490 3960
609 610 610-1/4
1706 1378 1404 1134 1248 1008
1017 837 744
551 454 403
398 328 291
284 233 207
5080 4190 3730
611
1404 1134
837
454
328
233
4190
613
1482 1197
883
479
346
246
4420
619
1794 1449
1069
579
419
298
5350
621
1950 1575
1162
630
455
324
5820
Bearing Number
194
Boston Gear 800-825-6544
Crane Hook Swivel Application Bearing No. 605 This standard product provided the exact bearing needed by this crane hoist manufacturer. An unground bearing provided the economy, while a full ball complement provided the required high thrust-load capacity. The bearing features a bonded non-separable assembly that provides easy installation and lubrication. Special platings and stainless steel balls are readily available as a cost-effective way to fight corrosion and increase service life.
P-1930-BG
04/10
Anti-Friction Bearings 2000 Series Ball Bearings Sheaves; Unground NR 2000 Series are unground, of pressed steel construction with hardened raceways. For rope, wire rope, etc. and special uses requiring a semi-circular tread.
F
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A .166 1/4 5/16
3/8
1/2 5/8 1
B
C
1-1/4 1-21/32 2-7/8 3-1/16 3 2-3/4 2-3/4 2-3/4 2-7/8 3 3-1/16 3-5/16 4-1/16 2-7/8 4-1/16 2-3/4 3 7-1/8
D
E
9/32 7/16 3/8 5/16 7/16 3/8 17/32 1/2 1 37/64 1/2 1 19/32 3/4 1 1/2 7/16 1 1/2 9/16 1 9/16 7/16 1 17/32 1/2 1 1/2 11/16 1 37/64 1/2 1 3/4 13/16 13/16 17/32 3/4 1 11/16 13/16 13/16 17/32 3/4 1 7/16 9/16 13/16 19/32 3/4 1 13/16 5/8 1-3/8
F
H
1 1-11/32 2-9/16 2-9/16 2-5/8 2-3/8 2-3/8 2-3/8 2-9/16 2-3/8 2-9/16 2-3/8 3-9/16 2-1/4 3-9/16 2-3/16 2-5/8 6
7/32 7/32 13/32 13/32 1/2 3/8 3/8 7/16 13/32 3/8 13/32 7/16 13/32 17/32 13/32 5/16 1/2 17/32
Catalog Number
Item Code
NR2000 NR2006 NR2008 NR2010 NR2011 NR2012 NR2012-1 NR2013 NR2014 NR2015 NR2016 NR2017 NR2024 NR5378 NR2025 NR2018 NR2020* NR5623
67135 67136 67137 67138 67139 67140 67141 67142 67143 67144 67145 67146 67149 67267 67150 67147 67148 67275
C H
F
B
D
A
E
* Inner race “D” dimension not centered.
Sheave Number NR2000 NR2006 NR2008 NR2010 NR2011 NR2012 NR2012-1 NR2013 NR2014 NR2015 NR2016 NR2017 NR2024 NR5378 NR2025 NR2018 NR2020 NR5623
P-1930-BG
Load Data
50
Radial Load Capacity (Lbs.) Revolutions Per Minute 100 200 300 600
900
No.
Diam.
88
62
42
34
24
19
10
1/8
300
210
144
116
81
66
14
1/4
293
208
146
121
82
70
14
1/4
300
210
144
116
81
66
14
1/4
230
164
115
95
65
55
14
1/4
300
210
144
116
81
66
14
1/4 3/16 1/4 3/16 1/4 3/16 1/4
Balls
471
334
235
194
132
112
300
210
144
116
81
66
15 14 15 14 15
293
208
146
121
82
70
19
04/10
Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation. STANDARD TOLERANCES Dimensions Tolerance
A
All
+.005 to -.000
Boston Gear 800-825-6544
195
Anti-Friction Bearings 2100 Series Ball Bearings Sheaves; Unground NR 2100 Series are unground, of pressed steel construction with hardened raceways. For chain or belt application.
F ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
E
F
.372 2-1/4
19/32
7/8
9/16
2-5/8 3/8 3-1/4 3-3/8
1/2 5/8 13/16 2 19/32 11/16 1 2-11/16 19/32 11/16 1 2-11/16
Catalog No.
Item Code
15/32
15/32 NR2105
67151
3/8 15/32 15/32
3/8 NR2106 67152 7/16 NR2111-1 67154 7/16 NR2111 67153
H
1-5/8
J
3-3/8 19/32 7/8 1 1/2 3 5/8 15/16 1 4-15/16 3/4 7/8 1
2-11/16 2-13/16 4
15/32 1/2 5/8
7/16 NR2112 1/2 NR2113 9/16 NR2118
67155 67156 67157
5/8 4-7/16
3-7/8
27/64
27/64 NR2120
67158
5/8
3/4
1
C
B F D
A
E
J H
Load Data Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation.
Radial Load Capacity in Pounds Revolutions Per Minute 100 200 300 600
Sheave Number
50
NR2105
220
153
119
85
NR2106
356
247
170
327
232
NR2118
500
NR2120
293
NR2111-1 NR2111 NR2112 NR2113
Balls 900
No.
Diam.
59
48
11
3/16
137
96
78
10
1/4
163
135
92
78
10
5/16
344
240
192
134
109
14
1/4
208
146
121
82
70
14
1/4
STANDARD TOLERANCES Dimensions Tolerance
A
196
All
+.005 to -.000
Boston Gear 800-825-6544
P-1930-BG
04/10
Anti-Friction Bearings 2200 Series Ball Bearings Wheels; Unground The NR 2200 series pressed steel, ball bearing type wheels conform to the drawings showing their tread types. NR2201, 2204 and 2205 have ball races and outer housing carefully hardened. NR 2203 and 2206 have hardened races and unhardened outer housings.
F
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A 1/4 3/8 3/8 17/32 1/2
B
C
D
R
Catalog No.
Item Code
— — — — 3/4
NR2201 NR2203 NR2204 NR2205 NR2206
67159 67160 67161 67162 67163
E
1.400 1/2 7/16 9/16 2-1/8 1/2 5/8 13/16 2-1/2 11/16 11/16 1 2-1/2 11/16 11/16 1 2-3/4 9/16 11/16 1
C
C
C
STANDARD TOLERANCES Dimensions Tolerance
A
All
+.005 to -.000 A
LOAD DATA*
Wheel Number NR2201 NR2203 NR2204 NR2205 NR2206
D
Radial Load Capacity in Pounds Balls Revolutions Per Minute 50 100 200 300 600 900 No. Diam. 91 66 47 37 25 23 15 1/8 230 164 115 95 65 55 15 3/16 136
100
327
232
71
56
163
135
38
34
92
14
78
14
D
E
B
D
E
B
2203
1/4
A
A
B
2201 2204 2205
1/4
E
3/4"
2206
Flanged 2300 Series Unground The NR 2300 Series pressed steel, ball bearing type wheels are advantageous for application to wooden rollers or steel tubes, pipes, etc. The flange serves as an economical method of locating the roller in its nest. The ball races are carefully hardened while the outer housing is unhardened. ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
A
B
C
D
EF
G
Catalog No. Code
H
C
F
B Item
3/8 2 1/2 11/16 9/16 1.875 1.875 7/16 NR2308 67165 3/8 2-1/4 9/16 3/4 9/16 1.625 1.625 1/2 NR2312+ 67166 1/2 3 9/16 15/16 1 2.781 2.810 1/2 NR2324 67167
A
D
G E
+Screw holes in Flange, for application to Wood Rollers.
STANDARD TOLERANCES Dimensions Tolerance
A
All
+.005 to -.000
LOAD DATA*
Wheel Number
Radial Load Capacity in Pounds Revolutions Per Minute 50 100 200 300 600 900
No. Diam.
NR2308 NR2312 NR2324
77 220 327
15 15 14
P-1930-BG
04/10
56 153 232
40 119 163
32 85 135
21 59 92
19 48 78
Balls
1/8 1/8 1/4
H *Load ratings are provided only as a guide for bearing selection and are not to be used for life calculation. Boston Gear 800-825-6544
197
Self-Aligning Bearings KF Female Series Rod Ends – Economical W D
H 45° WITH BALL STUD
F
B
CONE ANGLE
O
30° WITH BALL ONLY FF AN “L” DESIGNATES LEFT HAND THREAD
AF
J
SPECIFICATIONS
ALL DIMENSIONS IN INCHES Bore B
Outer Low carbon steel stamping Member plated for corrosion resistance Low carbon steel, case hardened plated for corrosion resistance and wear
Ball
+.0025 –.0005 .1900 .2500 .3125 .3750 .5000
LOAD DATA
Basic Bearing Number 3 4 5 6 8
Ultimate Static Load (Radial) Rating (Lbs.) 1,000 1,900 2,300 3,000 6,100
W
H
AF
FF
D
J
O
Ball Dia.
±.005 REF
±.060 ±.030
±.030
REF
REF
REF
.312 .375 .437 .500 .625
.500 .687 .687 .875 1.125
.750 .850 1.015 1.125 1.470
.450 .515 .590 .725 1.010
.296 .346 .438 .508 .690
.430 .510 .618 .713 .931
.250 .287 .305 .400 .500
1.062 1.312 1.375 1.625 2.125
Thread
Class UNF-2 10-32 1/4-28 5/16-24 3/8-24 1/2-20
ORDER BY CATALOG NUMBER OR ITEM CODE
Approx. Wt. (Lbs.) .02 .04 .07 .11 .23
Bore
Right Hand Catalog Item Number Code
Left Hand Catalog Item Number Code
.1900 .2500 .3125 .3750 .5000
KF-3 KF-4 KF-5 KF-6 KF-8
KFL-3 KFL-4 KFL-5 KFL-6 KFL-8
65001 65002 65041 65042 65069
65070 65140 65141 65142 65252
NOTES: To order with optional studs, add letters “Y” or “S” to suffix. For stud specifications, see Page 211. For Engineering Data, see Pages 207-211.
198
Boston Gear 800-825-6544
P-1930-BG
04/10
Self-Aligning Bearings HM-C Male/HF-C Female Series Rod Ends – Commercial W
W
D
H
H
D
B
B
O
F
Q
O FF
APPROX. LOCATION OF LUBRICATOR IF REQD.
Q
AF
GROOVE DEPICTS LEFT HAND THREAD
FM AM
G DIA
E ACROSS FLATS
MALE
FEMALE ALL DIMENSIONS IN INCHES
Bore B
W
H
AM
FM
AF
FF
D
G
E
O
Ball Dia.
Q
Thread
+.0025 -.0005
±.005
REF
±.060
±.030
±.060
±.030
±.010
REF
REF
REF
REF
REF
Class UNF-2
.1900
.312
.250
.750
1.250
.562
1.062
.750
.406
.312
.296
.430 ±5-1/2°
10-32
.750
.468
.375
.346
.510 ±6-1/2°
1/4-28
1
.2500
.375
.281
1.000
1.562
.750
1.312
.3125
.437
.344
1.250
1.875
.750
1.375
.875
.500
.437
.438
.618 ±5-1/2°
5/16-24
.3750
.500
.406
1.250
1.938
.937
1.625
1.000
.687
.562
.508
.713
±5°
3/8-24
.4375
.562
.437
1.375
2.125
1.062
1.812
1.125
.750
.625
.578
.806
±6°
7/16-20
.5000
.625
.500
1.500
2.438
1.187
2.125
1.312
.875
.750
.690
.931
±5°
1/2-20
.6250
.750
.562
1.625
2.625
1.500
2.500
1.500
1.000
.875
.801
1.098
±6°
5/8-18
.7500
.875
.687
1.750
2.875
1.750
2.875
1.750
1.125
1.000
1.010
1.336
±5°
3/4-16
+Tolerance +.015/–.010
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
Right Hand With Without Lubricator Lubricator Catalog Item Catalog Item Number Code Number Code
MALE TYPE .1900 — .2500 HM-4CG .3125 HM-5CG .3750 HM-6CG .4375 HM-7CG .5000 HM-8CG .6250 HM-10CG .7500 HM-12CG FEMALE TYPE .1900 — .2500 HF-4CG .3125 HF-5CG .3750 HF-6CG .4375 HF-7CG .5000 HF-8CG .6250 HF-10CG .7500 HF-12CG
SPECIFICATIONS
Left Hand With Without Lubricator Lubricator Catalog Item Catalog Item Number Code Number Code
— 48201 48202 48203 48204 48205 48206 48207
HM-3C HM-4C HM-5C HM-6C HM-7C HM-8C HM-10C HM-12C
48193 48194 48195 48196 48197 48198 48199 48200
— HML-4CG HML-5CG HML-6CG HML-7CG HML-8CG HML-10CG HML-12CG
— 48216 48217 48218 48219 48220 48221 48222
HML-3C HML-4C HML-5C HML-6C HML-7C HML-8C HML-10C HML-12C
48208 48209 48210 48211 48212 48213 48214 48215
— 48171 48172 48173 48174 48175 48176 48177
HF-3C HF-4C HF-5C HF-6C HF-7C HF-8C HF-10C HF-12C
48163 48164 48165 48166 48167 48168 48169 48170
— HFL-4CG HFL-5CG HFL-6CG HFL-7CG HFL-8CG HFL-10CG HFL-12CG
— 48186 48187 48188 48189 48190 48191 48192
HFL-3C HFL-4C HFL-5C HFL-6C HFL-7C HFL-8C HFL-10C HFL-12C
48178 48179 48180 48181 48182 48183 48184 48185
Outer Low carbon steel plated for Member corrosion resistance Ball
Case hardened steel plated for corrosion resistance and wear
Insert
Oil impregnated sintered bronze
LOAD DATA
Ultimate Static Basic Load (Radial) Bearing Rating (Lbs.) Number Male Female 3 1,600 1,800 4 2,250 2,300 5 2,850 2,900 6 3,900 4,300 7 5,300 5,350 8 7,400 8,400 10 9,350 9,550 12 10,450 10,500
Approx. Wt. (Lbs.) Male Female .04 .04 .05 .06 .08 .09 .12 .16 .17 .20 .27 .32 .40 .48 .72 .72
NOTES: To order with optional studs, add letter “Y” or "S" to suffix. For stud specifications, see Page 211. Lubricators available on sizes 4 through 12 only, studs available on all sizes. For Engineering Data, see Pages 207-211.
P-1930-BG
04/10
Boston Gear 800-825-6544
199
Self-Aligning Bearings CMHD Male/CFHD Female Series Rod Ends – Commercial; Self Lubricating W D
H
W H
D
B
F
O
Q B
O FF
APPROX. LOCATION OF LUBRICATOR IF REQD.
Q
AF
GROOVE DEPICTS LEFT HAND THREAD
FM AM
G DIA
E ACROSS FLATS
MALE
FEMALE
ALL DIMENSIONS IN INCHES
Bore B +.0025 -.0005 .1900 .2500 .3125 .3750 .4375 .5000 .6250 .7500
W
H
AM
FM
AF
FF
D
G
E
O
Ball Dia.
±.005
REF
±.060
±.030
±.060
±.030
±.010
REF
REF
REF
REF
.312 .375 .437 .500 .562 .625 .750 .875
.250 .281 .344 .406 .437 .500 .562 .687
.750 1.000 1.250 1.250 1.375 1.500 1.625 1.750
1.250 1.562 1.875 1.938 2.125 2.438 2.625 2.875
.562 .750 .750 .937 1.062 1.187 1.500 1.750
1.062 1.312 1.375 1.625 1.812 2.125 2.500 2.875
.625 .750 .875 1.000 1.125 1.312 1.500 1.750
.406 .468 .500 .687 .750 .875 1.000 1.125
.312 .375 .437 .562 .625 .750 .875 1.000
.296 .346 .438 .508 .578 .690 .801 1.010
.430 .510 .618 .713 .806 .931 1.098 1.336
SPECIFICATIONS
Ball
Case hardened steel electroless nickel plated
Insert
Reinforced nylon
LOAD DATA
Basic Bearing Number 3 4 5 6 7 8 10 12
Q
Class REF UNF-2 10-32 ±6° 1/4-28 ±7° 5/16-24 ±6° 3/8-24 ±5-1/2° 7/16-20 ±6° 1/2-20 ±5° 5/8-18 ±7-1/2° 3/4-16 ±6°
ORDER BY CATALOG NUMBER OR ITEM CODE
Outer Low carbon steel plated for Member corrosion resistance
Ultimate Static Load (Radial) Rating (Lbs.) Male Female 1,150 1,200 1,600 1,650 2,700 2,800 3,200 3,250 3,750 3,800 5,800 6,400 7,050 7,100 8,800 9,000
Thread
Approx. Wt. (Lbs.) .02 .04 .07 .11 .15 .23 .38 .58
Bore
Right Hand Catalog Item Number Code
MALE TYPE .1900 CMHD-3 .2500 CMHD-4 .3125 CMHD-5 .3750 CMHD-6 .4375 CMHD-7 .5000 CMHD-8 .6250 CMHD-10 .7500 CMHD-12 FEMALE TYPE .1900 CFHD-3 .2500 CFHD-4 .3125 CFHD-5 .3750 CFHD-6 .4375 CFHD-7 .5000 CFHD-8 .6250 CFHD-10 .7500 CFHD-12
Left Hand Catalog Number
Item Code
48307 48308 48309 48310 48311 48312 48313 48314
CMHDL-3 CMHDL-4 CMHDL-5 CMHDL-6 CMHDL-7 CMHDL-8 CMHDL-10 CMHDL-12
48315 48316 48317 48318 48319 48320 48321 48322
48291 48292 48293 48294 48295 48296 48297 48298
CFHDL-3 CFHDL-4 CFHDL-5 CFHDL-6 CFHDL-7 CFHDL-8 CFHDL-10 CFHDL-12
48299 48300 48301 48302 48303 48304 48305 48306
NOTES: To order with optional studs, add letter “Y” or "S" to suffix. For stud specifications, see Page 211. For Engineering Data, see Pages 207-211.
200
Boston Gear 800-825-6544
P-1930-BG
04/10
Self-Aligning Bearings HM Males/HF Female Series Rod Ends – Precision W
W
D
H
H
D
B
B
O
Q
O FF
Q
APPROX. LOCATION OF LUBRICATOR IF REQD.
F
AF
GROOVE DEPICTS LEFT HAND THREAD
FM AM
G DIA
E ACROSS FLATS
MALE
FEMALE ALL DIMENSIONS IN INCHES
Bore B +.0015 -.0005 .1900 .2500 .3125 .3750 .4375 .5000 .6250 .7500 1.0000
W
H
AM
FM
±.005
REF
±.060
±.030
.312 .375 .437 .500 .562 .625 .750 .875 1.375
.250 .281 .344 .406 .437 .500 .562 .687 1.000
.750 1.000 1.250 1.250 1.375 1.500 1.625 1.750 2.125
1.250 1.562 1.875 1.938 2.125 2.438 2.625 2.875 4.125
(1) Tolerance +.015/–.010
D
G
E
O
Ball Dia.
Q
±.060 ±.030
±.010
REF
REF
REF
REF
REF
.562 .750 .750 .937 1.062 1.187 1.500 1.750 2.125
.750 .406 .750(1) .468 .875 .500 1.000 .687 1.125 .750 1.312 .875 1.500 1.000 1.750 1.125 (2) 2.750 1.625
.312 .375 .437 .562 .625 .750 .875 1.000 1.500
.296 .346 .438 .508 .578 .690 .801 1.010 1.269
.430 ±5-1/2° .510 ±6-1/2° .618 ±5-1/2° .713 ±5° .806 ±6° .931 ±5° 1.098 ±6° 1.336 ±5° 1.875 7°
AF
(2) Tolerance +.030/–.010
FF
1.062 1.312 1.375 1.625 1.812 2.125 2.500 2.875 4.125
(3) Tolerance +.000/–.005
SPECIFICATIONS
Left Hand With Lubricator Catalog Item Number Code
Class UNF-2 10-32 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 5/8-18 3/4-16 1-1/4-12(4)
(4) Class 3 Threads
ORDER BY CATALOG NUMBER OR ITEM CODE
Right Hand With Without Lubricator Lubricator Bore Catalog Item Catalog Item Number Code Number Code MALE TYPE .1900 — — HM-3 48259 .2500 HM-4G 48267 HM-4 48260 .3125 HM-5G 48268 HM-5 48261 .3750 HM-6G 48269 HM-6 48262 .4375 HM-7G 48270 HM-7 48263 .5000 HM-8G 48271 HM-8 48264 .6250 HM-10G 48272 HM-10 48265 .7500 HM-12G 48273 HM-12 48266 1.0000 HM-16G 48103 HM-16 48102 FEMALE TYPE .1900 — — HF-3 48225 .2500 HF-4G 48233 HF-4 48226 .3125 HF-5G 48234 HF-5 48227 .3750 HF-6G 48235 HF-6 48228 .4375 HF-7G 48236 HF-7 48229 .5000 HF-8G 48237 HF-8 48230 .6250 HF-10G 48238 HF-10 48231 .7500 HF-12G 48239 HF-12 48232 1.0000 HF-16G 48105 HF-16 48104
Thread
Sizes 3 - 12
Without Lubricator Catalog Item Number Code
— HML-4G HML-5G HML-6G HML-7G HML-8G HML-10G HML-12G HML-16G
— 48284 48285 48286 48287 48288 48289 48290 48107
HML-3 HML-4 HML-5 HML-6 HML-7 HML-8 HML-10 HML-12 HML-16
48276 48277 48278 48279 48280 48281 48282 48283 48106
— HFL-4G HFL-5G HFL-6G HFL-7G HFL-8G HFL-10G HFL-12G HFL-16G
— 48250 48251 48252 48253 48254 48255 48256 48109
HFL-3 HFL-4 HFL-5 HFL-6 HFL-7 HFL-8 HFL-10 HFL-12 HFL-16
48242 48243 48244 48245 48246 48247 48248 48249 48108
Size 16
Outer Low carbon steel plated for Member corrosion resistance Ball
Case hardened steel for corrosion resistance and wear
52100 steel heat treated plated for corrosion resistance
Insert
Oil impregnated sintered bronze
Low carbon steel plated for corrosion resistance
LOAD DATA
Ultimate Static Basic Load (Radial) Bearing Rating (Lbs.) Number Male Female 3 1,600 1,800 4 2,250 2,300 5 2,850 2,900 6 3,900 4,300 7 5,300 5,350 8 7,400 8,400 10 9,350 9,550 12 10,450 10,500 16 43,540 43,540
Approx. Wt. (Lbs.) Male Female .04 .04 .05 .06 .08 .09 .12 .16 .17 .20 .27 .32 .40 .48 .62 .72 2.41 2.13
NOTES: To order with optional studs, add letter “Y” or “S” to suffix. For stud specifications, see Page 211. Lubricators available on sizes 4 through 16 only, studs available on sizes 3 through 12 only. For Engineering Data, see Pages 207-211. P-1930-BG
04/10
Boston Gear 800-825-6544
201
Self-Aligning Bearings HME Male/HFE Female Series Rod Ends – Precision; Self Lubricating W
D
W
D
H
H
Q
Q O O
F
B
B TEFLON® FABRIC LINER
FF
TEFLON® FABRIC LINER
FM
.070 DIA
J
AF
AM
N
K
MALE
FEMALE
ALL DIMENSIONS IN INCHES
Bore B
W
H
AM
FM
AF
+ .0015 +.000 ±.005 –.0005 –.005 .1900 .312 .250 .2500 .375 .281 .3125 .437 .344 .3750 .500 .406 .4375 .562 .437 .5000 .625 .500 .6250 .750 .562 .7500 .875 .687 1.0000 1.375 1.000(1)
+.060 –.030 .750 1.000 1.250 1.250 1.375 1.500 1.625 1.750 2.125
(1) Tolerance +.015/–.010
(2) Tolerance +.030/–.010
±.010 1.250 1.562 1.875 1.938 2.125 2.438 2.625 2.875 4.125
SPECIFICATIONS Outer Low carbon steel plated for corrosion Member resistance Ball
52100 Steel - heat treated Rc 56 Min hard chrome plated
Insert
Carbon steel - plated for corrosion resistance or stainless steel
Liner
Teflon® fabric permanently bonded to insert I.D.
Teflon® is a trade name of E.I. DuPont de Nemours & Co. Inc.
LOAD DATA
Basic Bearing Number 3 4 5 6 7 8 10 12 16
Ultimate Static Load (Radial) Rating (Lbs.) Male Female 1,169 1,531 2,158 2,539 2,784 3,133 3,915 3,915 4,218 4,218 6,660 6,660 7,364 7,364 11,518 11,518 43,540 43,540
Approx. Wt. (Lbs.) Male Female .03 .04 .04 .06 .08 .09 .12 .16 .16 .20 .25 .32 .39 .48 .60 .72 2.41 2.13
NOTE: For Engineering Data, see Pages 207-211.
202
Boston Gear 800-825-6544
+.060 –.030 .562 .750 .750 .937 1.062 1.187 1.500 1.750 2.125
FF
D
O
J
K
±.010
±.010
REF
±.010
±.010
1.062 1.312 1.375 1.625 1.812 2.125 2.500 2.875 4.125
.625 .750 .875 1.000 1.125 1.312 1.500 1.750 2.750(2)
.306 .331 .447 .517 .586 .656 .832 .978 1.269
.312 .375 .437 .562 .625 .750 .875 1.000 1.500
.406 .468 .500 .687 .750 .875 1.000 1.125 1.625
Ball Dia.
N +.000 –.005 .312 .312 .406 .469 .531 594 .750 .875 —
Q
Thread
Class UNF-3 .406 ±6-1/2° 10-32 .500 ±8° 1/4-28 .625 ±7° 5/16-24 .713 ±6° 3/8-24 .813 ±7° 7/16-20 .906 ±6° 1/2-20 1.125 ±8° 5/8-18 1.312 ±7° 3/4-16 1.875 ±7° 1-1/4-12 REF
REF
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
Right Hand Catalog Item Number Code
Left Hand Catalog Number
Item Code
HME-3 HME-4 HME-5 HME-6 HME-7 HME-8 HME-10 HME-12 HME-16
48038 48039 48040 48041 48043 48044 48045 48046 48047
HMLE-3 HMLE-4 HMLE-5 HMLE-6 HMLE-7 HMLE-8 HMLE-10 HMLE-12 HMLE-16
48059 48063 48065 48067 48068 48069 48076 48077 48078
HFE-3 HFE-4 HFE-5 HFE-6 HFE-7 HFE-8 HFE-10 HFE-12 HFE-16
48079 48080 48086 48088 48091 48093 48094 48095 48096
HFLE-3 HFLE-4 HFLE-5 HFLE-6 HFLE-7 HFLE-8 HFLE-10 HFLE-12 HFLE-16
48004 48006 48007 48008 48010 48012 48014 46017 48019
MALE TYPE .1900 .2500 .3125 .3750 .4375 .5000 .6250 .7500 1.0000 FEMALE TYPE .1900 .2500 .3125 .3750 .4375 .5000 .6250 .7500 1.000
P-1930-BG
04/10
Self-Aligning Bearings HMX Male/HFX Female Series Rod Ends – Extra Capacity W
W
D
D
H
H
Q Q O
B
O
TEFLON FABRIC LINER
FM
®
FF
J
F
B
APPROX. LOCATION OF LUBRICATOR .070 DIA.
AM
AF N
K
MALE
FEMALE
ALL DIMENSIONS IN INCHES
Bore B
W
+.0015 –.0005 .2500 .3125 .3750 .4375 .5000 .6250 .7500 .7500
+.000 –.005 .375 .437 .500 .562 .625 .750 .875 .875
H ±.005 .281 .344 .406 .437 .500 .562 .687 .687
AM +.060 –.030 1.000 1.250 1.250 1.375 1.500 1.625 1.750 1.750
FM ±.010 1.562 1.875 1.938 2.125 2.438 2.625 2.875 2.875
AF +.060 –.030 .750 .750 .937 1.062 1.187 1.500 1.750 1.750
FF
D
O
J
K
±.010
±.010
REF
±.010
±.010
1.312 1.375 1.625 1.812 2.125 2.500 2.875 2.875
.750 .875 1.000 1.125 1.312 1.500 1.750 1.750
.331 .447 .517 .586 .656 .832 .978 .978
.375 .437 .562 .625 .750 .875 1.000 1.000
.468 .500 .687 .750 .875 1.000 1.125 1.125
Bore
Left Hand with Lubricator Catalog Item Number Code
MALE TYPE .2500 HMX-4G .3125 HMX-5G .3750 HMX-6G .4375 HMX-7G .5000 HMX-8G .6250 HMX-10G .7500 HMX-12G FEMALE TYPE .2500 HFX-4G .3125 HFX-5G .3750 HFX-6G .4375 HFX-7G .5000 HFX-8G .6250 HFX-10G .7500 HFX-12G NOTE For Engineering Data, see Pages 207-211.
P-1930-BG
04/10
+.000 –.005 .312 .406 .469 .531 .594 .750 .875 .875
Q
REF REF .500 .625 .718 .813 .906 1.125 1.312 1.312
±8° ±7° ±6° ±7° ±6° ±8° ±7° ±7°
Female Male Thread Thread Class Class UNF-3B UNF-3A 1/4-28 5/16-24 5/16-24 3/8-24 3/8-24 7/16-20 7/16-20 1/2-20 1/2-20 5/8-18 5/8-18 3/4-16 3/4-16 7/8-14 3/4-16 7/8-14
SPECIFICATIONS
ORDER BY CATALOG NUMBER OR ITEM CODE
Right Hand with Lubricator Catalog Item Number Code
Ball Dia.
N
48337 48338 48339 48340 48341 48342 48343
HMXL-4G HMXL-5G HMXL-6G HMXL-7G HMXL-8G HMXL-10G HMXL-12G
48344 48345 48346 48347 48348 48349 48350
48323 48324 48325 48326 48327 48328 48329
HFXL-4G HFXL-5G HFXL-6G HFXL-7G HFXL-8G HFXL-10G HFXL-12G
48330 48331 48332 48333 48334 48335 46336
HMX Series Alloy steel, heat treated magnetic Outer particle inserted Member plated for corrosion resistance Ball
Insert
HFX Series Steel alloy, heat treated plated for corrosion resistance
52100 steel heat treated, hard chrome plated
52100 steel heat treated, hard chrome plated
Aluminum bronze
Alloy steel, heat treated plated for corrosion resistance or stainless steel, heat treated
LOAD DATA
Basic Ultimate Static Load (Radial) (Lbs.) Bearing Number Male Female 4 5,390 6,190 5 7,500 7,639 6 9,590 9,544 7 11,000 10,285 8 13,575 16,238 10 17,300 17,955 12 23,225 28,081
Approx. Wt. (Lbs.) Male Female .06 .06 .09 .09 .13 .15 .18 .20 .30 .32 .46 .48 .72 .72
Boston Gear 800-825-6544
203
Self-Aligning Bearings LHA-LHB-LHSS Series Sphericals – Precision LUBRICATION GROOVES
W
F B
O
D
45° F
LUBRICATION HOLES (2)
SPECIFICATIONS LHB
LHA
4130 Steel or equal Outer heat treated Member plated for corrosion resistance
T
LHSS
Aluminum Bronze
410 or equal Stainless Steel
52100 Steel heat treated, plated for corrosion resistance and wear
Ball
ORDER BY CATALOG NUMBER OR ITEM CODE ALL DIMENSIONS IN INCHES
Bore B
D
+.0000 –.0005 .1650 .1900 .2500 .3125 .3750 .4375 .5000 .5625 .6250 .7500 .8750 1.0000
+.0000 –.0005 .4687 .5625 .6562 .7500 .8125 .9062 1.0000 1.0937 1.1875 1.4375 1.5625 1.7500
F
T
W
O
Ball Dia.
REF
±.005
±.005
REF
REF
.020 .020 .022 .032 .032 .032 .032 .032 .032 .044 .044 .044
.187 .218 .250 .281 .312 .343 .390 .437 .500 .593 .703 .797
.250 .281 .343 .375 .406 .437 .500 .562 .625 .750 .875 1.000
.235 .293 .364 .419 .517 .572 .642 .670 .739 .920 .980 1.118
.343 .406 .500 .562 .656 .718 .813 .906 .968 1.187 1.312 1.500
LHA Series
LHB Series
LHSS Series
Catalog Number
Item Code
Catalog Number
Item Code
Catalog Number
Item Code
LHA-2 LHA-3 LHA-4 LHA-5 LHA-6 LHA-7 LHA-8 LHA-9 LHA-10 LHA-12 LHA-14 LHA-16
48405 48406 48407 48408 48409 48410 48411 48412 48413 48414 48415 48416
LHB-2 LHB-3 LHB-4 LHB-5 LHB-6 LHB-7 LHB-8 LHB-9 LHB-10 LHB-12 LHB-14 LHB-16
48417 48418 48419 48420 48421 48422 48423 48424 48425 48426 48427 48428
LHSS-2 LHSS-3 LHSS-4 LHSS-5 LHSS-6 LHSS-7 LHSS-8 LHSS-9 LHSS-10 LHSS-12 LHSS-14 LHSS-16
48429 48430 48431 48432 48433 48434 48435 48436 48437 48438 48439 48440
LOAD DATA
Basic Bearing Number
NOTES: For Engineering Data, see Pages 207-211. For Housing Bores, see Page 210.
204
Boston Gear 800-825-6544
2 3 4 5 6 7 8 9 10 12 14 16
Maximum Static Radial Load (Lbs.) LHA/LHSS LHB 2,000 5,400 8,400 11,600 15,600 18,600 22,400 30,000 40,000 50,000 86,000 104,000
1,000 2,700 4,200 5,800 7,800 9,300 11,200 15,000 20,000 30,000 43,000 52,000
Approx. Weight (Lbs.) .01 .02 .02 .03 .04 .05 .07 .09 .11 .21 .27 .39
P-1930-BG
04/10
Self-Aligning Bearings LHSSE-LHSSVV Series Sphericals – Precision; Self Lubricating LUBRICATION GROOVES
W
F B
O
D
45° F
LUBRICATION HOLES (2)
T
ORDER BY CATALOG NUMBER OR ITEM CODE ALL DIMENSIONS IN INCHES
Bore B
O
+.0000 –.0005 .1650 .1900 .2500 .3125 .3750 .4375 .5000 .5625 .6250 .7500 .8750 1.0000
REF .235 .293 .364 .419 .517 .572 .642 .670 .739 .920 .980 1.118
D +.0000 –.0005 .4687 .5625 .6562 .7500 .8125 .9062 1.0000 1.0937 1.1875 1.4375 1.5625 1.7500
F
T
REF
±.005
.020 .020 .022 .032 .032 .032 .032 .032 .032 .044 .044 .044
.187 .218 .250 .281 .312 .343 .390 .437 .500 .593 .703 .797
W +.000 –.005 .250 .281 .343 .375 .406 .437 .500 .562 .625 .750 .875 1.000
LHSSE Series Catalog
Item
Catalog
Item
REF
Number
Code
Number
Code
LHSSE-2 LHSSE-3 LHSSE-4 LHSSE-5 LHSSE-6 LHSSE-7 LHSSE-8 LHSSE-9 LHSSE-10 LHSSE-12 LHSSE-14 LHSSE-16
48021 48023 48025 48027 48029 48030 48032 48033 48034 48035 48036 48037
LHSSVV-2 LHSSVV-3 LHSSVV-4 LHSSVV-5 LHSSVV-6 LHSSVV-7 LHSSVV-8 LHSSVV-9 LHSSVV-10 LHSSVV-12 LHSSVV-14 LHSSVV-16
48453 48454 48455 48456 48457 48458 48459 48460 48461 48462 48463 48464
.343 .406 .500 .562 .656 .718 .813 .906 .968 1.187 1.312 1.500
SPECIFICATIONS
LOAD DATA
Basic Bearing Number 2 3 4 5 6 7 8 9 10 12 14 16
P-1930-BG
LHSSE
LHSSVV
Approx. Wt. (Lbs.)
1,200 3,250 4,900 6,450 8,250 10,200 13,600 15,900 21,000 30,000 41,100 54,700
1,200 3,250 4,900 6,450 8,250 10,200 13,600 15,900 21,000 30,000 41,100 54,700
.010 .014 .022 .03 .04 .05 .07 .09 .11 .21 .26 .39
Maximum Static Radial Load (Lbs.)
04/10
LHSSVV Series
Ball Dia.
LHSSE Series
LHSSVV Series
Outer Member
410 Stainless Steel
410 Stainless Steel
Ball
52100 Steel heat treated plated for corrosion resistance and wear
52100 Steel heat treated plated for corrosion resistance and wear
Self Lubricating Teflon® Liner
Teflon® Fabric
Teflon® is a trade name of E. I. DuPont de Nemours & Co. Inc.
NOTES: For Engineering Data, see Pages 207-211.
Boston Gear 800-825-6544
205
Self-Aligning Bearings LS/LSS Series Sphericals – Special Purpose
D
D
W
W H
H
F O
O
B
B
LUBRICATION GROOVE AROUND BALL
C x 45° CHAMBER
LS/LSS 3 – 10
C x 45° CHAMBER
LS 12 – 30
ORDER BY CATALOG NUMBER OR ITEM CODE ALL DIMENSIONS IN INCHES
Bore D H w B .+.0025 +.0000 ±.005 ±.005 –.0005 –.0005
Ball Dia.
O
REF
REF
C
LS Series
SPECIFICATIONS
+.015 Catalog Item –.000 Number Code
.1900
.6250
.187
.281
.400
.285
.016
LS-3
48381
.2500
.7500
.281
.375
.510
.346
.016
LS-4
48382
.3125
.8750
.313
.437
.618
.438
.016
LS-5
48383
.3750
1.0000
.375
.500
.713
.508
.016
LS-6
48384
.4375
1.1875
.437
.562
.806
.578
.032
LS-7
48385
.5000
1.3125
.531
.687
.931
.627
.044
LS-8
48386
.6250
1.5625
.687
.875
1.178
.789
.044
LS-10
48387
.7500
2.2500
.937
1.250
1.625
1.038
.044
LS-12
48388
1.0000
2.3750
.875
1.125
1.750
1.345
.062
LS-16
48389
1.1875
2.6250 1.000 1.250
2.000
1.562
.085
LS-19
48390
1.5000
3.2500 1.250 1.500
2.500
2.000
.085
LS-24
48391
1.8750
4.0000 1.313 1.625
3.000
2.521
.125
LS-30
48392
Bore Ball D H w O C LSS Series B Dia. .+.0000 +.0000 ±.005 ±.000 (REF) (REF) +.000 Catalog Item –.0005 –.0005 -.005 -.000 –.005 Number Code .1900
.5625
.218
.281
.406
.293
.020
LSS-3
48394
.2500
.6562
.250
.343
.500
.364
.022
LSS-4
48395
.3125
.7500
.281
.375
.562
.419
.032
LSS-5
48396
.3750
.8125
.312
.406
.656
.517
.032
LSS-6
48397
.4375
.9062
.343
.437
.718
.572
.032
LSS-7
48398
.5000
1.0000
.390
.500
.813
.642
.032
LSS-8
48399
.5625
1.0937
.437
.562
.906
.670
.032
LSS-9
48400
.6250
1.1875
.500
.625
.968
.739
.032
LSS-10
48401
.7500
1.4375
.593
.750
1.187
.920
.044
LSS-12
48402
.8750
1.5625
.703
.875
1.312
.980
.044
LSS-14
48403
1.0000
1.7500
.797
1.000
1.500 1.118
.044
LSS-16
48404
LS Series Size 3 - 10 Size 12 - 30 Outer Member
LSS Series All
Low carbon Carbon steel, 4130 Steel or steel, plated for cadmium or zinc equal, RC 36-42 corrosion resistance plated cadmium plated
Ball
Low carbon steel, case hardened, plated for corrosion
Chrome steel heat treated
S.A.E. 52100 Steel heat treated and chrome plated
Insert
Sintered Bronze Oil impregnated
Brass
None
LOAD DATA
LS SERIES LSS SERIES Basic Maximum Static Maximum Static Bearing Radial Load Approx. Radial Load Approx. in Lbs. Wt.(Lbs.) in Lbs. Wt.(Lbs.) Number 3 1,520 .02 5,400 .014 4 2,900 .04 8,400 .022 5 3,900 .05 11,600 .030 6 5,400 .08 15,600 .038 7 7,100 .12 18,600 .048 8 9,900 .18 22,400 .065 9 30,000 .086 10 16,300 .33 40,000 .110 12 47,600 .94 50,000 .204 14 86,000 .263 16 48,200 1.00 104,000 .386 19 63,000 1.27 24 98,000 2.38 30 123,000 3.75
NOTES: For Engineering Data, see Pages 207-211.
206
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Engineering Data
F
Environment and Mounting
Caution:
Corrosive Environments
The lubricator mounting hole in housings reduces the strength of housings by varying amounts depending on size and location.
All components are protected by plating or corrosion inhibiting oil.
Lubrication and Contaminants The rating of all series with metal-on-metal bearing members is based on the presence of an adequate lubricant film. Ratings for the Reinforced Nylon race series are based on dry operation with the inherent lubrication provided by the bronze ball. A controlled internal clearance is present in all metal-onmetal bearings. The reinforced Nylon race series are molded with a positive interference fit-up which excludes contaminants and results in an excellent selfwiping action. Protection from contaminants should be provided wherever possible. Grease fittings or lubricant entry provisions are available for most metal-on-metal bearings. Periodic relubrication will improve operation under severe conditions. Contaminants are also flushed out during relubrication. Where relubrication is difficult or impractical, the self-lubricating features of the sintered ball or race materials and the reinforced Nylon race provide built-in protection.
P-1930-BG
04/10
Mounting Sintered bronze balls may be distorted by excessive clamping pressure. Care should be used in tightening a nut against the ball to prevent distortion or binding. Caution: certain ANSI bolt series with fillets under the head will interfere with proper assembly. Use of a countersunk washer is suggested.
Temperature and Water Immersion Self Aligning bearings may be operated between –30°F and +300°F, with wider ranges obtained by the use of special lubricants. Reinforced nylon race bearings may be operated between –30°F and +150°F. Prolonged immersion of Nylon races in water can cause an increase in torque.
Boston Gear 800-825-6544
207
Engineering Information Engineering Data
Mounting and Misalignment Factors
F
The single biggest reason rod end bearings are used is for their ability to absorb gross misalignment and still transmit motion in the preferred direction. To overcome misalignment, the ball or housing rotates as far as necessary or until it strikes an obstruction. The amount of misalignment a bearing can absorb is limited by the mounting arrangement. Shown below are common mounting arrangements, along with an indication of the misalignment absorbing capabilities of each. The table lists the maximum angular displacement in each mounting mode.
Adding a standoff washer with the same diameter as the ball face increases misalignment absorbing capability. The limit is reached when the washer strikes the face. The greatest misalignment compensation results when the ball is fitted with a stud, the shank diameter of which equals the ball bore chamfer, (see A). One piece ball studs (see B) of similar proportions also allow similar misalignment. Exceeding these dimensional limits may deform the race, so care should be taken to choose the proper mounting arrangement.
Rod Ends offer the least misalignment absorbing capability when fitted closely between the legs of a clevis or when the ball is bolted against the face of a lever. The limit is reached when the housing head strikes the mounting member.
A
B
a1
STANDOFF WASHERS
C
C
a1 A
MOUNTING ARRANGEMENTS
B
Reference Letters D – Head Diameter or Outer Race Diameter H – Housing Width W – Ball Width A1=Sin–1 W – Sin–1 H D D
ANGLE OF MISALIGNMENT (A1)
208
Size
KF
-3 -4 -5 -6 -7 -8 -10 -12 -16
±15° ±15° ±15° ±15° — ±15° — — —
Boston Gear 800-825-6544
SERIES HM-C/HF-C CMHD/CFHD HM/HF ±5-1/2° ±6-1/2° ±5-1/2° ±5° ±6° ±5° ±6° ±5° ±7°
±6° ±7° ±6° ±5-1/2° ±6° ±5° ±7-1/2° ±6° —
HME/HFE HMX/HFX ±6-1/2° ±8° ±7° ±6° ±7° ±6° ±8° ±7° ±7°
P-1930-BG
04/10
Engineering Information Engineering Data
Spherical bearings offer a greater variety of mounting positions compared to the rod end bearings. The angle of misalignment is calculated based on its mounting arrangement. Shown are three common mountings and the formulae for calculating the angle of misalignment.
a2
a4
a3 a3
a2
a4
a4=Sin–1 B – Sin–1 H E E
a3=Sin–1 W – Sin–1 H E E
a2=Sin–1 W – Sin–1 H A A
Reference Letters B – Ball Bore C – Outer Race Chamfer D – Head Diameter or Outer Race Diameter E – Ball Diameter H – Housing Width A–
(D-2C)2 + H2
W – Ball Width
SPHERICAL BEARINGS
a2
a3
a4
Series LHA LHB LHSS LHSSE LHSSVV
±9° ±8° ±9° ±8° ±6 1/2° ±7 1/2° ±8° ±9° ±6 1/2° ±6° ±5° ±5°
±16 1/2° ±14 1/2° ±14° ±12 1/2° ±11° ±12 1/2° ±12° ±15° ±10° ±18 1/2° ±7° ±7°
±34 1/2° ±29° ±30° ±27° ±25° ±23° ±23° ±27° ±25° ±23 1/2° ±23° ±25°
-2 -3 -4 -5 -6 -7 -8 -9 -10 -12 -14 -16
Series LS
-3 -4 -5 -6 -7 -8 -10 -12 -16 -19 -24 -30
P-1930-BG
04/10
Mounting Arrangements
Mounting Arrangements a2
a3
a4
±8 1/2° ±7° ±9° ±8° ±7 1/2° ±6 1/2° ±7° ±7 1/2° ±7° ±7° ±7° ±7 1/2°
±13 1/2° ±11° ±13° ±12° ±10 1/2° ±9 1/2° ±10° ±10° ±9° ±9° ±9° ±9 1/2°
±28° ±29 1/2° ±30° ±26° ±23° ±20 1/2° ±20° ±20° ±19° ±21° ±16° ±16°
Boston Gear 800-825-6544
209
F
Engineering Information Engineering Data Housing Bore for Press Fit of Spherical Bearings Basic Bearing Size
F
3 4 5 6 7 8 10 12 16 19 24 30
Basic Bearing Size 2 3 4 5 6 7 8 9 10 12 14 16
210
D Bearing O.D. +.0000 /-.0005 LS SERIES .6250 .7500 .8750 1.0000 1.1875 1.3125 1.5625 2.2500 2.3750 2.6250 3.2500 4.0000
D Bearing O.D. +.0000 /-.0005
HOUSING BORE RECOMMENDED (Aluminum or Steel) .6248/.6243 .7498/.7493 .8748/.8743 .9998/.9993 1.1873/1.1868 1.3123/1.3118 1.5623/1.5618 2.2498/2.2493 2.3748/2.3743 2.6248/2.6243 3.2498/3.2493 3.9998/3.9993
HOUSING BORE RECOMMENDED (Aluminum or Steel)
LHA, LHB, LHSSE, LHSSVV SERIES .4687 .4685/.4680 .5625 .5623/.5618 .6562 .6560/.6555 .7500 .7498/.7493 .8125 .8123/.8118 .9062 .9060/.9055 1.0000 .9998/.9993 1.0937 1.0935/1.0930 1.1875 1.1873/1.1868 1.4375 1.4373/1.4368 1.5625 1.5623/1.5618 1.7500 1.7498/1.7493
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Stud – Specifications
L
L M
F
50°
50°
K
STAKED SIDE
H
M
H
K
STAKED SIDE
HIGH TENSILE STUDS
INTEGRAL STUDS
Steel studs are available in the CMHD/CFHD, HM/HF, HM-C/HF-C and KF Series to facilitate right angle connections. Standard misalignment is 50° in all sizes. Threads are only available as right hand. There are two types of studs available:
Numbering System High Tensile Steel Studs Use a “Y” suffix after the complete catalog number Example: CFHDL-3Y
High Tensile Steel Studs–(Y Suffix)
Integral Ball Stud
High tensile steel studs are available for sizes 3 through 12. These studs are machined for exact fit-up within the ball bore, providing smooth operation and high performance. The studs are assembled to maintain the internal clearances inherent in the Rod Ends. They are permanently secured in the bore of the ball, threaded for easy mounting and have a hex section to facilitate tightening. The stud is designed to accommodate 50° misalignment in any direction, and provides maximum load capacity.
Use a “S” suffix after the complete catalog number Example: HF-5S
Materials Rod End:
Refer to basic Rod End specification page
Stud:
High tensile steel - Plated for corrosion resistance
Integral Stud:
Integral Ball Studs–(S Suffix)
Low carbon steel - case hardened plated for corrosion resistance
The ball and stud are combined into a single unit of case hardened machined plated steel. Wrench flats are provided for tightening. These studs offer the same operational features as the high tensile studs, with slightly reduced load capacity. The integral studs are available in sizes 3 through 8 only.
DIMENSIONS AND LOAD DATA
DIMENSIONS IN INCHES
To Fit Rod End Size
Stud Thread UNF-2
H
K
L
M
±.005
±.010
±.015
MIN
High-Tensile Stud
Ball Stud
3 4 5
10-32 1/4-28 5/16-24
.312 .375 .438
.500 .562 .687
1.016 1.047 1.234
.437 .500 .594
350 850 1,600
250 550 1,050
6 7 8
3/8-24 7/16-20 1/2-20
.500 .625 .625
.906 1.125 1.125
1.570 1.968 2.000
.812 .938 .938
2,400 2,700 3,100
1,500 1,800 2,200
10 12
5/8-18 3/4-16
.750 1.000
1.500 1.812
2.500 3.000
1.250 1.625
4,500 6,000
N/A N/A
P-1930-BG
04/10
Static Load Rating (Lbs.)
Boston Gear 800-825-6544
211
Mounted Bearings Replacement Bearings for Setscrew Locking Series
F
Mounted Bearings offer a simple, convenient method of providing load support. Selection for most applications may be readily accomplished from a single selection chart, based on shaft size, radial and thrust load requirements. Installation normally requires only bolting to a suitable mounting surface and securing bearing to shaft with setscrews or eccentric locking collar provided.
The Boston Gear Mounted Bearing line is one of the most comprehensive available to industry. Ranging from light duty, plain bearing blocks to precision units. They all feature Boston Gear’s tradition of design excellence and precision manufacture.
Light Duty Series
Standard Duty Series
Medium Duty Series
PPB — Split cast iron housing with bore and mounting base machined.
All Series — Solid one-piece cast iron housing of American manufacture with removable zerktype threaded grease fitting. Precision machined base and spherical bore. Available in pillow block, 2 bolt and 4 bolt flanges.
MB Series — Solid one-piece heavy duty cast iron housing with removable zerk-type threaded grease fitting. Available in pillow block 4 bolt flange and piloted flange with precision machined base, pilot diameter and spherical bore. Spherical O.D. bearing of international manufacture with extended inner race and double setscrews for positive shaft locking and smoothness of operation.
SRP — PPB Series with a Bost-Bronz (oil impregnated) sleeve bearing. PS — Stamped steel housing with pillow block, 2 bolt and 3 bolt flange configuration. Extended inner race, (2) setscrews locking to shaft. Prelubricated spherical O.D. bearing. XL — Ductile iron housing with pillow block, 2 bolt and 3 bolt flange configuration. Extended inner race, (2) setscrews locking to shaft. Prelubricated spherical O.D. bearing.
212
Boston Gear 800-825-6544
H & L Series — Eccentric shaft lock of international manufacture. S Series — Extended inner race with double setscrews for positive shaft locking.
P-1930-BG
04/10
Mounted Bearings Replacement Bearings and Locking Collars for Eccentric Locking Collar Series
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
Replacement Bearings Catalog Item Number Code
INTERNATIONAL BEARINGS Locking Collars Catalog Item Number Code
Bearing and Carrier (A Series Only) Catalog Item Number Code
NX3008M NX3010M NX4012M NX5014M NX5015M NX5016M NX6018M NX6019M NX6020M NX7104M NX7105M NX7106M NX7107M NX8108M NX9110M NX9111M NX9112M NX10115M NX11200M NX11203M NX11204M NX11207M
NX3008LC — NX4012LC — NX5015LC NX5016LC — NX6019LC NX6020LC — NX7105LC NX7106LC NX7107LC NX8108LC NX9110LC NX9111LC NX9112LC NX10115LC NX11200LC NX11203LC — NX11207LC
3A-1/2 B&C 3A-5/8 B&C 4A-3/4 B&C 5A-7/8 B&C 5A-15/16 B&C 5A-1 B&C 6A-1-1/8 B&C 6A-1-3/16 B&C 6A-1-1/4 B&C — — — — — — — — — — — — —
67374 67377 67380 67383 67386 67389 67392 67395 67398 67401 67404 67407 67410 67413 67416 67419 67422 67425 67428 67431 67434 67437
67373 — 67379 — 67385 67388 — 67394 67397 — 67403 67406 67409 67412 67415 67418 67421 67424 67427 67430 — 67436
07030 07032 07014 07034 07036 07022 07038 07040 07042 — — — — — — — — — — — — —
(FOR USE WITH THE L, H, F, T AND A SERIES BEARINGS)
P-1930-BG
04/10
Boston Gear 800-825-6544
213
Mounted Bearings Replacement Bearings for Setscrew Locking Series
F
PS & XL SERIES Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-3/8 1-7/16
S SERIES
Catalog Number
Item Code
NBG15-1/2 NBG15-5/8 NBG15-3/4 NBG15-7/8 NBG15-15/16 NBG15-1 NBG15-1-1/16 NBG15-1-1/8 NBG15-1-3/16 NBG15-1-1/4S NBG15-1-3/8 NBG15-1-7/16
68880 68881 68882 68883 68884 68885 68886 68887 68888 68889 68891 68892
(FOR USE WITH THE PS, PS2, PS3, XL, XL2 AND XL3 SERIES BEARINGS)
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
MB SERIES
Catalog Number
Item Code
NBG25-1/2 NBG25-5/8 NBG25-3/4 NBG25-7/8 NBG25-15/16 NBG25-1 NBG25-1-1/16 NBG25-1-1/8 NBG25-1-3/16 NBG25-1-1/4S NBG25-1-5/16 NBG25-1-3/8 NBG25-1-7/16 NBG25-1-1/2 NBG25-1-5/8 NBG25-1-11/16 NBG25-1-3/4 NBG25-1-15/16 NBG25-2 NBG25-2-3/16 NBG25-2-1/4 NBG25-2-7/16
68893 68894 68895 68896 68897 68898 68899 68900 68901 68902 68903 68904 68905 68906 68907 68908 68909 68910 68911 68912 68913 68914
Bore 1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-3/16 3-1/4 3-7/16 3-1/2
Catalog Number
Item Code
NBG35-1-7/16 NBG35-1-1/2 NBG35-1-11/16 NBG35-1-3/4 NBG35-1-15/16 NBG35-2 NBG35-2-3/16 NBG35-2-1/4 NBG35-2-7/16 NBG35-2-1/2 NBG35-2-11/16 NBG25-2-15/16 NBG35-3 NBG35-3-3/16 NBG35-3-1/4 NBG35-3-7/16 NBG35-3-1/2
68915 68916 68917 68918 68919 68920 68921 68922 68923 68924 68925 68926 68927 68928 68929 68930 68931
(FOR USE WITH THE MB, MBF AND MBP SERIES BEARINGS)
(FOR USE WITH THE SF, SH, SL AND ST SERIES BEARINGS)
214
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Bearings PPB Series SRP Series – With Bost-Bronz Bushings Pillow Blocks – Light Duty Split Cast Iron The bottom surface and the split surfaces are ground. Both end surfaces of the bore are finished perpendicular to the base. Bolt holes in the base are slotted except Cat. No. PPB4 which has drilled holes. PPB Series blocks have an oil hole drilled in center of cap.†
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number
Item Code
SRP SERIES Pillow Blocks Replacement Bearing Catalog Item Catalog Item Number Code Number Code
PPB4 PPB6 PPB8 PPB10 PPB12 PPB14 PPB15 PPB16 PPB19 PPB20 PPB23 PPB24
34304 34306 34308 34310 34312 34314 34316 34318 34320 34322 34324 34326
SRP4 SRP6 SRP8 SRP10 SRP12 — SRP15 SRP16 SRP19 SRP20 — —
PPB SERIES Bore
1/4 3/8 1/2 5/8 3/4 7/8 15/16 1 1-3/16 1-1/4 1-7/16 1-1/2 *Two required.
34434 34436 34438 34440 34442 — 34444 34446 34448 34450 — —
B46-2 B68-3 B812-4 B1014-6 B1216-6 — B1520-8 B1620-8 B1924-8 B2024-8 — —
34542 34634 34752 34852 34934 — 35042 35068 35172 35186 — —
STANDARD TOLERANCES Dimensions Tolerance PPB Series Bore
All
+.000 to –.001
SRP Series Bore
†The 1/4” size is made of brass and has no oil holes.
.252–1.003 1.1905–1.2530
+.000 to –.001 +.000 to –.002
L
K
F
D
A
M
D B
J C
H
E
G
ALL DIMENSIONS IN INCHES
A (Bore) B PPB SERIES .2500 1/4 .3760 9/16 .5010 .6260 13/16 .7510 .8760 .9385 1-1/8 1.0010 1.1885 1.2510 1-3/8 1.4385 1.5010 SRP SERIES .2510 9/16 .3770 .5020 13/16 .6270 1-1/8 .7530 .9405 1.0030 1-3/8 1.1905 1.2530
P-1930-BG
04/10
C
D
E
F
G
H
J
K
L
M
1-1/8
1/8
1-1/2
1/2
1/2
3/8
1/4
3/4
3/8
7/16
2-1/8
5/16x3/16
2-3/4
1-1/8
1
5/8
5/16
1-7/16
7/16
1
2-7/8
1/2x5/16
3-3/4
1-5/8
1-1/2
1
1/2
2
11/16
1-1/2
3-3/4
5/8x3/8
5
2-1/4
2
1-1/4
5/8
2-1/2
7/8
2
4-1/2
3/4x1/2
6
2-3/4
2-1/2
1-1/2
3/4
3
1
2-1/2
2-1/8
5/16x3/16
2-3/4
1-1/8
1
5/8
5/16
1-7/16
7/16
1
2-7/8
1/2x5/16
3-3/4
1-5/8
1-1/2
1
1/2
2
11/16
1-1/2
3-3/4
5/8x3/8
5
2-1/8
2
1-1/4
5/8
2-1/2
7/8
2
4-1/2
3/4x1/2
6
2-3/4
2-1/2
1-1/2
3/4
3
1
2-1/2
Boston Gear 800-825-6544
215
Mounted Ball Bearings PS Series Pressed Steel Housing Pillow Blocks – Light Duty Setscrew Locking Features — Quality pressed steel outer housing. Deep groove ball bearings for high radial and thrust loads. Spherical outer race for full self-alignment. Synthetic lip type seals. Positive locking by setscrews through extended inner race. Lubricated for life. Housing halves snap together for ease of assembly.
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S
Catalog Number
Item Code
PS-1/2 PS-5/8 PS-3/4 PS-7/8 PS-15/16 PS-1 PS-1-1/16 PS-1-1/2 PS-1-3/16 PS-1-1/4S
64500 64501 64502 64503 64504 64505 64506 64507 64508 64509
STANDARD TOLERANCES Dimensions Bore
Tolerance
All
+.001 to –.000
ALL DIMENSIONS IN INCHES
Bore
A
1/2 7/8 5/8 3/4 1 7/8 15/16 1-1/8 1 1-1/16 1-1/8 1-5/16 1-3/16 1-1/4S
G
H
J
K
L
P
R* Setscrew UNF
S
Bolt Size
1-3/4 1.125 2-11/16 3-5/8
1
.133
.34
.54
15/64
31/32
10—32
5/8
5/16
2-1/16 1.203
3
1
.178
.40
.54
9/32
1-11/64
10—32
45/64 5/16
2-7/32 1.328
3-3/8
4-1/2 1-1/8
.208
.40
.54
19/64 1-11/32
10—32
49/64
3/8
2-5/8 1.390
3-3/4
4-7/8 1-1/8
.238
.53
.75
5/16
1-39/64 1/4—28
53/64
3/8
B
C
E
F
4-1/8
Approx. Weight (Lbs.) .52 .48 .58 .67 .64 .61 1.10 1.05 1.00 .95
*2 at 120° Eccentric Locking Collar bearings are available to special order. For Load Ratings, See Engineering Section, Page 236. Replacement Bearings are shown on Page 214.
216
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings XL Series Cast Ductile Housing Pillow Blocks – Light Duty Setscrew Locking Features — One-piece housing (ductile casting). Deep groove ball bearings for high radial and thrust loads. Machined housing bore and spherical outer race for full self-alignment. Synthetic lip type seal. Positive locking by setscrews through extended inner race.
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-3/8 1-7/16
Catalog Number
Item Code
XL-1/2 XL-5/8 XL-3/4 XL-7/8 XL-15/16 XL-1 XL-1-1/16 XL-1-1/8 XL-1-3/16 XL-1-1/4S XL-1-3/8 XL-1-7/16
64534 64535 64536 64537 64538 64539 64540 64541 64542 64543 64545 64546
L
S R B P K
A E MIN.
J
H E MAX.
G
F
C
STANDARD TOLERANCES Dimensions Tolerance Bore
All
+.001 to –.000
ALL DIMENSIONS IN INCHES
Bore
A
B
C
1/2 5/8 1-3/16 2-5/32 1-1/8 3/4 1-5/16 2-7/16 1-15/64 7/8 15/16 1-7/16 2-21/32 1-11/32 1 1-1/16 1-1/8 1-11/16 3-5/32 1-31/64 1-3/16 1-1/4S 1-3/8 1-7/8 3-9/16 1-11/16 1-7/16
E Min.
E Max.
F
3-3/16 3-11/16 4-1/2
G 1
H
J
K
L
P
9/32 7/16 11/16 15/64 31/32
R* Setscrew UNF
S
10—32
5/8
Approx. Bolt Weight Size (Lbs.) 3/8
.6
3-5/8
3-7/8 4-3/4 1-1/16 5/16 7/16 9/16 9/32 1-11/64 10—32 45/64 3/8
.8
3-7/8
4-1/8
5
1-1/8 11/32 7/16 9/16 19/64 1-11/32 10—32 49/64 3/8
1.0
4-1/2
4-3/4
6
1-5/16 3/8
1.4
4-3/4
5
9/16 11/16 5/16 1-39/64 1/4—28 53/64 1/2
6-3/8 1-3/8 13/32 9/16 11/16 11/32 1-27/32 1/4—28
1
1/2
1.9
*2 at 120° These units also available with Eccentric Locking Collars on Special Order. For Load Ratings, see Engineering Section, Page 237. Replacement Bearings are shown on Page 214.
P-1930-BG
04/10
Boston Gear 800-825-6544
217
Mounted Ball Bearings L/H Series Pillow Blocks – Standard Duty; Eccentric Locking Collar L Series Low Backing H Series High Backing
F
Features — Rigid one piece housing. Chrome alloy steel balls. Spherical outer race. Synthetic lip type seals. Eccentric locking collar. 1/4-28 threaded grease fitting.
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2-1/4 2-7/16
Low Backing
High Backing
L Series
H Series
Catalog Number
Item Code
Catalog Number
Item Code
3L-1/2 3L-5/8 4L-3/4 5L-7/8 5L-15/16 5L-1 6L-1-1/8 6L-1-3/16 6L-1-1/4S 7L-1-1/4* 7L-1-5/16* 7L-1-3/8* 7L-1-7/16* 8L-1-1/2* 9L-1-5/8* 9L-1-11/16* 9L-1-3/4* 10L-1-15/16* 12L-2-1/4* 12L-2-7/16*
06906 06908 06912 06920 06922 06924 06928 06930 06934 06858 06860 06862 06864 06868 06876 06878 06880 06884 06898 06900
3H-1/2 3H-5/8 4H-3/4 5H-7/8 5H-15/16 5H-1 6H-1-1/8 6H-1-3/16 6H-1-1/4S 7H-1-1/4* 7H-1-5/16* 7H-1-3/8* 7H-1-7/16* 8H-1-1/2* 9H-1-5/8* 9H-1-11/16* 9H-1-3/4* 10H-1-15/16* 12H-2-1/4* 12H-2-7/16*
06902 06904 06910 06914 06916 06918 06932 06936 06926 06850 06852 06854 06856 06866 06870 06872 06874 06882 06894 06896
*Bearings equipped with steel flinger. Replacement Bearings are shown on Page 213.
218
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings L/H Series Pillow Blocks – Standard Duty; Eccentric Locking Collar SHAFT HEIGHT DIMENSIONS IN INCHES
Low Backing Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
High Backing
A
B
H
A
B
H
1-1/16
2-5/32
1/2
1-3/16
2-9/32
5/8
1-1/4
2-15/32
9/16
1-5/16 2-17/32
5/8
1-5/16
2-21/32
5/8
1-7/16 2-25/32
3/4
1-9/16
3-1/8
3/4
1-11/16
7/8
L
S R B P K
A E MIN.
3-1/4
J
H E MAX.
G
F
1-13/16 3-11/16
1
1-7/8
3-3/4
1-1/16
1-15/16
4
1-1/8
2
4-1/16
1-3/16
2-1/16
4-1/4
1-1/4
2-1/8
4-5/16
1-5/16
C
STANDARD TOLERANCES
2-3/16
4-1/2
Dimensions Bore
1-3/8
2-1/4
4-9/16
1-7/16
2-7/16
4-15/16 1-1/2
2-1/2
5
1-9/16
2-11/16
5-7/16
2-3/4
5-1/2
1-11/16
1-5/8
Tolerance
All
+.0012 to –.0000
ALL DIMENSIONS IN INCHES
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
E
C
F
G
J
K
L
R Setscrew UNF
S
1-9/64
1/4-28
7/8
P
Min.
Max.
3-5/16
4
5-1/16 1-1/2
7/16
25/32
1-45/64 3-7/16
4-1/8
5-1/4 1-9/16
7/16
25/32 19/64
1-19/64
1/4-28
1-47/64 3-7/16
4-1/4
5-1/2
1-5/8
7/16
11/16 19/64
1-1/2
1-59/64 4-5/16 4-15/16 6-1/4
1-3/4
9/16
7/8
23/64
5-3/8 6-11/16 1-7/8
9/16
7/8
1-5/8
2-13/64
4-3/4
2-3/8
5-1/4 5-13/16 7-1/4
2-7/16
5-9/16
6-1/8
2-5/8
6-1/16
2-29/32 6-7/16
Bolt Size
Approx. Wt. (Lbs.) L
H
3/8
1.1
1.2
59/64
3/8
1.6
1.6
1/4-28
59/64
3/8
1.9
1.9
1-3/4
5/16-24
1-3/64
1/2
2.6
2.7
47/64
2-3/16
3/8-24
1-17/64 1/2
4.1
4.3
1/4
2
9/16
27/32 27/32
2-23/64
3/8-24
1-3/8
1/2
5.5
5.6
7-3/4
2-1/8
9/16
27/32 27/32
2-1/2
3/8-24
1-3/8
1/2
6.5
6.6
6-5/8
8-1/4
2-1/4
11/16
31/32 31/32
2-3/4
3/8-24
1-1/2
5/8
8.0
8.1
7-3/8
8-7/8
2-3/8
11/16
1-5/32 1-3/32
3
7/16-20 1-23/32 5/8
9.5
10.0
3-3/32 6-15/16 7-7/8
9-5/8
2-1/2
11/16
1-5/32 1-7/32
3-5/16
7/16-20 1-27/32 5/8
11.8
11.9
For Load Ratings, see Engineering Section, Page 237.
P-1930-BG
04/10
Boston Gear 800-825-6544
219
F
Mounted Ball Bearings SL/SH Series Pillow Blocks – Standard Duty; Extended Inner Race – Setscrew Locking SL Series Low Backing SH Series High Backing
F Features — One-piece, high grade cast iron housing. Deep groove ball bearings for high radial and thrust loads. Precision machined housing bore and spherical outer race for self-alignment. Synthetic lip type seals with steel flinger. Positive locking by setscrews through extended inner race. 1/4-28 threaded grease fitting and channel through outer race allow relubrication.
ORDER BY CATALOG NUMBER OR ITEM CODE
Low Backing Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
High Backing
Catalog Number
Item Code
Catalog Number
Item Code
SL-1/2* SL-5/8* SL-3/4 SL-7/8 SL-15/16 SL-1 SL-1-1/8 SL-1-3/16 SL-1-1/4S SL-1-1/4 SL-1-5/16 SL-1-3/8 SL-1-7/16 SL-1-1/2 SL-1-5/8 SL-1-11/16 SL-1-3/4 SL-1-15/16 SL-2 SL-2-3/16 SL-2-1/4 SL-2-7/16
64680 64682 64684 64686 64688 64690 64692 64694 64696 64698 64700 64702 64704 64706 64708 64710 64712 64714 64716 64718 64720 64722
SH-1/2* SH-5/8* SH-3/4 SH-7/8 SH-15/16 SH-1 SH-1-1/8 SH-1-3/16 SH-1-1/4S SH-1-1/4 SH-1-5/16 SH-1-3/8 SH-1-7/16 SH-1-1/2 SH-1-5/8 SH-1-11/16 SH-1-3/4 SH-1-15/16 SH-2 SH-2-3/16 SH-2-1/4 SH-2-7/16
64679 64681 64683 64685 65687 64689 64691 64693 64695 64697 64699 64701 64703 64705 64707 64709 64711 64713 64715 64717 64719 64721
*Bearings not equipped with steel flinger. Replacement Bearings are shown on Page 214.
220
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings SL/SH Series Pillow Blocks – Standard Duty; Extended Inner Race – Setscrew Locking SHAFT HEIGHT DIMENSIONS IN INCHES
Low Backing Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
High Backing
A
B
H
A
B
H
1-1/16
2-5/32
1/2
1-3/16
2-9/32
5/8
1-1/4
2-15/32
9/16
1-5/16 2-17/32
5/8
1-5/16 2-21/32
5/8
1-7/16 2-25/32
3/4
1-9/16
3/4
1-11/16
7/8
3-1/8
3-1/4
S
B
K
P A
H E MIN.
J
E MAX.
G C
F
1-13/16 3-11/16
1
1-7/8
3-3/4
1-1/16
1-15/16
4
1-1/8
2
4-1/16
1-3/16
2-1/16
4-1/4
1-1/4
2-1/8
4-5/16
1-5/16
2-3/16
4-1/2
F
L
R
STANDARD TOLERANCES Dimensions Tolerance
1-3/8
2-1/4
4-9/16
1-7/16
2-7/16 4-15/16
1-1/2
2-1/2
5
1-9/16
2-11/16 5-7/16
1-5/8
2-3/4
5-1/2
1-11/16
Bore
All
+.0012 to –.0000
ALL DIMENSIONS IN INCHES
Bore
C
1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
E
F
G
J
K
L
P
R* Setscrew (UNF)
S
Bolt Size
Approx. Wt. (Lbs.) L H
31/32
10-32
5/8
3/8
1.25
1.38
Min.
Max.
1-3/8
3-5/16
4
5-1/16 1-1/2
7/16
25/32
9/32
1-1/2
3-7/16
4-1/8
5-1/4 1-9/16
7/16
25/32
1/2 1-11/64
10-32
23/32
3/8
1.75
1.75
1-37/64
3-3/4
4-1/4
5-1/2
1-5/8
7/16
11/16
9/16 1-21/64
10-32
25/32
3/8
2.00
2.00
4-5/16 4-15/16 6-1/4
1-3/4
9/16
7/8
5/8 1-39/64
1/4-28
7/8
3/8
2.75
2.88
5-3/8 6-11/16 1-7/8
9/16
7/8
11/16 1-27/32
1/4-28
1
1/2
4.25
4.50
2
9/16
27/32
3/4
2-3/32
5/16-24
1-3/16
1/2
5.63
5.75
1-3/4
1-15/16
4-3/4
2-3/16
5-1/4 5-13/16 7-1/4
2-33/64 5-9/16
6-1/8
7-3/4
2-1/8
9/16
27/32
3/4 2-17/64
5/16-24
1-3/16
1/2
6.63
6.75
2-13/32 6-1/16
6-5/8
8-1/4
2-1/4
11/16
31/32
3/4 2-29/64
5/16-24
1-5/16
5/8
8.25
8.25
7-3/8
8-7/8
2-3/8
11/16
1-5/32
7/8 2-23/32
5/16-24
1-5/16
5/8
10.00 10.25
2-13/16 6-15/16 7-7/8
9-5/8
2-1/2
11/16
1-5/32
3/8-24
1-9/16
5/8
12.25 12.38
2-1/2
6-7/16
1
3-1/32
*2 at 120° For Load Ratings, see Engineering Section, Page 237.
P-1930-BG
04/10
Boston Gear 800-825-6544
221
Mounted Ball Bearings MB Series Pillow Blocks – Medium Duty; Extended Inner Race – Setscrew Locking Features — One-piece high grade cast iron housing. Deep groove ball bearings for high radial and thrust loads. Precision machined housing bore and spherical race for full self-alignment. Synthetic lip type seal with steel flinger. Positive locking by setscrews through extended inner race. 1/4-28 threaded grease fitting and channel through outer race allow relubrication.
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
R
1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-3/16 3-1/4 3-7/16 3-1/2
L
S
K P B
A
H E MIN.
J
E MAX.
G C
F
STANDARD TOLERANCES Dimensions Tolerance Bore
All
+.001 to –.000
Catalog Number
Item Code
MB-1-7/16 MB-1-1/2 MB-1-11/16 MB-1-3/4 MB-1-15/16 MB-2 MB-2-3/16 MB-2-1/4 MB-2-7/16 MB-2-1/2 MB-2-11/16 MB-2-15/16 MB-3 MB-3-3/16 MB-3-1/4 MB-3-7/16 MB-3-1/2
64573 64574 64575 64576 64577 64578 64579 64580 64581 64582 64583 64584 64585 64586 64587 64588 64589
ALL DIMENSIONS IN INCHES
Bore
A
1-7/16 2-1/8 1-1/2 2-5/16 1-11/16 1-3/4 2-5/16 1-15/16 2-1/2 2 2-3/16 2-1/4 2-3/4 2-7/16 3 2-1/2 2-11/16 3-1/2 2-15/16 3-1/2 3 3-3/16 4 3-1/4 3-7/16 4 3-1/2
B
C
E Min.
E Max.
F
G
H
J
K
L
P
R* Setscrew (UNF)
S
Approx. Bolt Size Weight (Lbs.)
4-3/16 2-17/64 5-1/16 6-5/16 6-1/2 2-1/4 3/4 9/16 1-3/16 3/4 4-9/16 2-1/2 5-9/16 6-11/16 8-1/4 2-5/8 13/16 11/16 1-1/4 3/4
1-27/32 5/16-24 1-9/64 1/2 2-3/32 5/16-24 1-3/16 5/8
6.8 9.0
4-5/8 2-19/32 5-1/2
6-3/4
8-1/4 2-5/8 13/16 11/161-5/16 3/4
2-17/64 5/16-24 1-9/32 5/8
9.5
5-1/16 2-3/4
6
7-1/2
8-7/8 2-7/8 7/8 11/161-7/16 7/8
2-23/32 5/16-24 1-5/16 5/8
11.7
6-5/8
7-7/8
9-5/8 3-1/8 1-1/16 13/161-7/16
3-1/32 3/8-24 1-9/16 3/4
16.2
7-3/16 8-13/16 10-3/8 3-1/4 1-1/16 13/16 1-5/8 1-3/16 3-27/64 3/8-24 1-3/4 3/4
21.5
5-5/8
3-1/8
6-3/16 3-3/8
1
6-15/16 3-3/8 7-15/1610-1/16 11-7/8 3-1/2 1-1/8 15/16
2
1-5/16 3-43/64 3/8-24 1-3/4 7/8
29.2
7-1/8 3-11/16 7-15/1610-1/16 11-7/8 3-1/2 1-1/4 15/16
2
1-5/16 3-7/8 1/2-20 1-15/16 7/8
31.5
1-1/4 15/162-5/161-11/32 4-3/16 1/2-20 2-1/32 7/8
41.1
4-3/8 1-5/16 15/16 2-3/8 1-9/16 4-25/64 1/2-20 2-7/32 7/8
47.8
8
4-1/32
9-3/4 12-1/2
15
8-1/4 4-13/32 9-11/1612-9/16
15
4
*2 at 120° For Load Ratings, See Engineering Section, Page 237. Replacement Bearings are shown on Page 214.
222
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings PS2/PS3 Series Pressed Steel Housing Flanged Units – Light Duty; Setscrew Locking ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-1/4 1-3/8 1-7/16
3-BOLT Catalog Number PS3-1/2 PS3-5/8 PS3-3/4 PS3-7/8 PS3-15/16 PS3-1 PS3-1-1/16 PS3-1-1/8 PS3-1-3/16 PS3-1-1/4S PS3-1-1/4 PS3-1-3/8 PS3-1-7/16
2-BOLT Catalog Number PS2-1/2 PS2-5/8 PS2-3/4 PS2-7/8 PS2-15/16 PS2-1 PS2-1-1/16 PS2-1-1/8 PS2-1-3/16 PS2-1-1/4S
Item Code 64520 64521 64522 64523 64524 64525 64526 64527 64528 64529 64530 64532 64533
Item Code 64510 64511 64512 64513 64514 64515 64516 64517 64518 64519
-----
F
-----
STANDARD TOLERANCES Dimensions Bore
F
K
R
B
B A
All
+.001 to –.000
C
S
J
Tolerance
L
P
A MIN. FRAME OPENING
F
D M
E
ALL DIMENSIONS IN INCHES
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-1/4 1-3/8 1-7/16
A
B
3-3/16 2-1/2
C
E
F Sq.
J
K
L
M
P
R* Setscrew UNF
S
Bolt Size
5/8
1/4
23/64 45/64 9/32 1-15/16 2-5/16 15/64 13/64 31/32
10-32
3-9/16 2-13/16 .166
25/64 25/32 11/32 2-3/16 2-5/8
9/32 7/32 1-11/64
10-32
45/64 5/16
3-3/4
27/64 27/32 11/32 2-3/8 2-51/64 19/64 1/4 1-11/32
10-32
49/64 5/16
1/4 1-39/64 1/4-28
53/64 3/8
3
.150
D
.166
4-7/16 3-9/16 .208
29/64 15/16 13/32 2-13/16 3-5/16 5/16
4-13/16 3-15/16 .208
31/64 1-7/64 13/32 3-3/16
—
11/32 9/32 1-27/32 1/4-28
1
3/8
Approx. Weight (Lbs.) PS3 PS2 .63 .51 .59 .47 .74 .60 .87 .70 .84 .67 .81 .64 1.42 1.08 1.37 1.03 1.32 .98 1.27 .93 1.93 1.84 — 1.74
*2 at 120° Eccentric Locking Collar bearings are available to special order. On 1-1/4” through 1-7/16” Hole Diameters, Eccentric Collar bearings will have extended inner races on both sides and will project beyond “M” dimension. For Load Ratings, see Engineering Section, Page 236. Replacement Bearings are shown on Page 214.
P-1930-BG
04/10
Boston Gear 800-825-6544
223
Mounted Ball Bearings XL2/XL3 Series Cast Ductile Housing Flanged Units – Light Duty; Setscrew Locking ORDER BY CATALOG NUMBER OR ITEM CODE
3-BOLT Catalog Number XL3-1/2 XL3-5/8 XL3-3/4 XL3-7/8 XL3-15/16 XL3-1 XL3-1-1/16 XL3-1-1/8 XL3-1-3/16 XL3-1-1/4S XL3-1-3/8 XL3-1-7/16
Bore
F
1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-3/8 1-7/16
2-BOLT Catalog Number XL2-1/2 XL2-5/8 XL2-3/4 XL2-7/8 XL2-15/16 XL2-1 XL2-1-1/16 XL2-1-1/8 XL2-1-3/16 XL2-1-1/4S XL2-1-3/8 XL2-1-7/16
Item Code 64560 64561 64562 64563 64564 64565 64566 64567 64568 64569 64571 64572
Item Code 64547 64548 64549 64550 64551 64552 64553 64554 64555 64556 64558 64559
STANDARD TOLERANCES Dimensions Bore
Tolerance
All
+.001 to –.000
K
E
D
F
C R
A
A J
S
B
B
L
P F
J
ALL DIMENSIONS IN INCHES
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-3/8 1-7/16
A 3-3/16
B
C
D
F Sq.
1
9/32 1-13/16 1-15/16 15/64
J
K
L
P
R* Setscrew UNF
31/32
10-32
S
Bolt Size
5/8
Approx. Weight (Lbs.) XL3 XL2
1/4
.6
.5
3-9/16 2-13/16 7/16
3/4
1-1/8 11/32 2-1/16
2-1/4
9/32 1-11/64
10-32
45/64 3/16
.7
.7
3-3/4
3/4
1-1/8 11/32 2-5/16
2-1/2
19/64 1-11/32
10-32
49/64 5/16
.8
.8
3-9/16 15/32 27/32 1-19/64 13/32 2-13/16 2-15/16 5/16 1-39/64 1/4-28
53/64 3/8
1.2
1.2
1.6
1.5
4-7/16
2-1/2 27/64 11/16
E
3
7/16
4-13/16 3-15/16 1/2
29/32
1-1/2 13/32 3-3/16
3-3/8
11/32 1-27/32 1/4-28
1
3/8
*2 at 120° These units also available with Eccentric Locking Collars on Special Order. For Load Ratings, See Engineering Section, Page 237. Replacement Bearings are shown on Page 214.
224
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings F/T Series Flanged Units – Standard Duty; Eccentric Locking Collar F Series 4-Bolt T Series 2-Bolt Features —
F
Rigid one-piece high housing. Chrome alloy steel balls. Spherical outer race. Synthetic lip type seals. Eccentric locking collar. 1/4-28 threaded grease fitting.
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
4-BOLT FLANGES F SERIES Catalog Item Number Code 3F-1/2 06938 3F-5/8 06940 4F-3/4 06942 5F-7/8 06944 5F-15/16 06946 5F-1 06948 6F-1-1/8 06950 6F-1-3/16 06952 6F-1-1/4S 06954 7F-1-1/4* 06956 7F-1-5/16* 06958 7F-1-3/8* 06960 7F-1-7/16* 06962 8F-1-1/2* 06964 9F-1-5/8* 06966 9F-1-11/16* 06968 9F-1-3/4* 06970 10F-1-15/16* 06972 11F-2* 06974 11F-2-3/16* 06976 12F-2-1/4* 06978 12F-2-7/16* 06980
2-BOLT FLANGES T SERIES Catalog Item Number Code 3T-1/2 06982 3T-5/8 06984 4T-3/4 06986 5T-7/8 06988 5T-15/16 06990 5T-1 06992 6T-1-1/8 06994 6T-1-3/16 06996 6T-1-1/4S 06998 7T-1-1/4* 07000 7T-1-5/16* 07002 7T-1-3/8* 07004 7T-1-7/16* 07006 — — — — — — — — 10T-1-15/16* 50695 — — — — — — — —
*Bearings equipped with steel flinger. Replacement Bearings are shown on Page 213.
P-1930-BG
04/10
Boston Gear 800-825-6544
225
Mounted Ball Bearings F/T Series Flanged Units – Standard Duty; Eccentric Locking Collar ENVELOPE AND BOLT SPACING DIMENSIONS IN INCHES
A
4-BOLT B
A
2-BOLT B
K
2-7/8
2-1/8
3-3/4
3
2-9/32
3-3/8
2-1/2
4-13/32
3-17/32
2-37/64
3-3/4
2-3/4
4-57/64
3-57/64
2-53/64
4-1/4
3-1/4
5-19/32
4-19/32
3-19/64
4-5/8
3-5/8
6-1/8
5-1/8
3-11/64
5-1/8
4
—
—
—
5-3/8
4-1/8
—
—
—
5-5/8
4-3/8
7-7/16
6-3/16
4-9/16
6-3/8
5-1/8
—
—
—
6-7/8
5-5/8
—
—
—
Bore A SQUARE
F
K
D S
B SQUARE
1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
L
R
B J A
P
F F
C E
STANDARD TOLERANCES Dimensions Bore
All
Tolerance +.0012 to –.0000
ALL DIMENSIONS IN INCHES
Bore
C
D
E
F Bolt
J
L
P F T
R* Setscrew UNF
1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
7/16
1-1/16
1-37/64
3/8
2
1/4
1-9/64
1/4-28
7/8
.9
.9
1/2
1-7/32
1-13/16
3/8
2-1/4
19/64
1-19/64
1/4-28
59/64
1.7
1.2
9/16
1-1/4
1-27/32
7/16
2-1/2
19/64
1-1/2
1/4-28
59/64
2.0
1.6
9/16
1-11/32
2
7/16
2-15/16
23/64
1-3/4
5/16-24
1-3/64
2.7
2.1
5/8
1-3/8
2-1/8
1/2
3-1/4
47/64
2-3/16
3/8-24
1-17/64
3.7
2.8
11/16
1-37/64
2-11/32
1/2
3-3/4
27/32
2-23/64
3/8-24
1-3/8
5.0
—
11/16
1-39/64
2-11/32
9/16
3-7/8
27/32
2-1/2
3/8-24
1-3/8
5.4
—
11/16
1-51/64
2-19/32
9/16
4-1/8
31/32
2-3/4
3/8-24
1-1/2
6.0
4.8
3/4
1-31/32
2-15/16
5/8
4-1/2
1-3/32
3
7/16-20
1-23/32
8.4
—
3/4
2-1/8
3-3/16
5/8
4-7/8
1-7/32
3-5/16
7/16-20
1-27/32
10.0
—
S
Approx. Weight (Lbs.) F T
*2 at 120°. For Load Ratings, See Engineering Section, Page 237.
226
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings SF/ST Series Flanged Units – Standard Duty; Extended Inner Race – Setscrew Locking SF Series 4-Bolt ST Series 2-Bolt Features —
F
One-piece high grade cast iron housing. Deep groove ball bearings for high radial and thrust loads. Precision machined housing bore and spherical outer race for self-alignment. Synthetic lip type seal with steel flinger. Positive locking by setscrews through extended inner race. 1/4-28 threaded grease fitting and channel through outer race allow relubrication.
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
4-BOLT Catalog Number SF-1/2 SF-5/8 SF-3/4 SF-7/8 SF-15/16 SF-1 SF-1-1/8 SF-1-3/16 SF-1-1/4S SF-1-1/4 SF-1-5/16 SF-1-3/8 SF-1-7/16 SF-1-1/2 SF-1-5/8 SF-1-11/16 SF-1-3/4 SF-1-15/16 SF-2 SF-2-3/16 SF-2-1/4 SF-2-7/16
Item Code 64736 64737 64738 64739 64740 64741 64742 64743 64744 64745 64746 64747 64748 64749 64750 64751 64752 64753 64754 64755 64756 64757
2-BOLT Catalog Number ST-1/2 ST-5/8 ST-3/4 ST-7/8 ST-15/16 ST-1 ST-1-1/8 ST-1-3/16 ST-1-1/4S ST-1-1/4 ST-1-5/16 ST-1-3/8 ST-1-7/16 — — — — ST-1-15/16 — — — —
Item Code 64723 64724 64725 64726 64727 64728 64729 64730 64731 64732 64733 64734 64735 — — — — 50696 — — — —
Replacement Bearings are shown on Page 214.
P-1930-BG
04/10
Boston Gear 800-825-6544
227
Mounted Ball Bearings SF/ST Series Flanged Units – Standard Duty; Extended Inner Race – Setscrew Locking ENVELOPE AND BOLT SPACING DIMENSIONS IN INCHES
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
A SQUARE
F
K
B SQUARE
R
E S
A J
L
P
B
F
C
D
F
STANDARD TOLERANCES Dimensions Bore
All
Tolerance +.0012 to –.0000
4-BOLT A B 2-7/8 2-1/8
A 3-3/4
2-BOLT B 3
K 2-9/32
3-3/8
2-1/2
4-13/32
3-17/32
2-37/64
3-3/4
2-3/4
4-57/64
3-57/64
2-53/64
4-1/4
3-1/4
5-19/32
4-19/32
3-19/64
4-5/8
3-5/8
6-1/8
5-1/8
3-11/64
5-1/8
4
—
—
—
5-3/8
4-1/8
—
—
—
5-5/8 6-3/8
4-3/8 5-1/8
7-7/16 —
6-3/16 —
4-9/16 —
6-7/8
5-5/8
—
—
—
ALL DIMENSIONS IN INCHES
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16
Approx. Weight (Lbs.) SF ST
C
D
E
F Bolt
J
L
P
R* Setscrew UNF
7/16
1-1/16
1-17/64
3/8
2
9/32
31/32
10-32
5/8
.9
.9
1/2
1-7/32
1-31/64
3/8
2-1/4
1/2
1-11/64
10-32
23/32
1.7
1.2
9/16
1-1/4
1-9/16
7/16
2-1/2
9/16
1-11/32
10-32
25/32
2.0
1.6
9/16
1-11/32
1-11/16
7/16
2-15/16
5/8
1-39/64
1/4-28
7/8
2.7
2.1
5/8
1-3/8
1-27/32
1/2
3-5/16
11/16
1-27/32
1/4-28
1
3.7
2.8
11/16
1-37/64
2-1/64
1/2
3-3/4
3/4
2-3/32
5/16-24
1-3/16
5.0
—
11/16
1-39/64
2-1/64
9/16
3-7/8
3/4
2-17/64
5/16-24
1-3/16
5.4
—
11/16
1-51/64
2-3/8
9/16
4-1/8
3/4
2-29/64
5/16-24
1-9/32
6.0
4.8
3/4
1-31/32
2-17/32
5/8
4-1/2
7/8
2-23/32
5/16-24
1-5/16
8.4
—
3/4
2-1/8
2-29/32
5/8
4-7/8
1
3-1/32
3/8-24
1-9/16
10.0
—
S
*2 AT 120° For Load Ratings, See Engineering Section, Page 237.
228
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings MBF Series Flanged Units – Medium Duty; Extended Inner Race – Setscrew Locking Features — One-piece high grade cast iron housing. Deep groove ball bearings for high radial and thrust loads. Precision machined housing bore and spherical outer race for full self-alignment. Synthetic lip type seal with steel flinger. Positive locking by setscrews through extended inner race. 1/4-28 threaded grease fitting and channel through outer race allow relubrication.
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore 1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-3/16 3-1/4 3-7/16 3-1/2
Catalog Number MBF-1-7/16 MBF-1-1/2 MBF-1-11/16 MBF-1-3/4 MBF-1-15/16 MBF-2 MBF-2-3/16 MBF-2-1/4 MBF-2-7/16 MBF-2-1/2 MBF-2-11/16 MBF-2-15/16 MBF-3 MBF-3-3/16 MBF-3-1/4 MBF-3-7/16 MBF-3-1/2
Item Code 64590 64591 64592 64593 64594 64595 64596 64597 64598 64599 64600 64601 64602 64603 64604 64605 64606
A SQUARE B SQUARE
E L
S R
J
P
C D
F
STANDARD TOLERANCES Dimensions Bore
Tolerance
1-7/16-1-3/4 1-15/16-3-1/2
+.0010 to –.0000 +.0012 to –.0000
Approx. Weight (Lbs.) 1-9/64 5.5 1-3/16 6.0
ALL DIMENSIONS IN INCHES
Bore
A
B
C
D
E
F Bolt
J
L
1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-3/16 3-1/4 3-7/16 3-1/2
5-1/8 5-3/8
4 4-1/8
11/16 11/16
1-37/64 1-39/64
2-5/32 2-5/32
1/2 9/16
3-3/4 3-7/8
3/4 3/4
R* Setscrew UNF 1-27/32 5/16-24 2-3/32 5/16-24
5-5/8
4-3/8
11/16
1-51/64
2-3/8
9/16
4-1/8
3/4
2-17/64 5/16-24
1-9/32
6.8
6-3/8
5-1/8
3/4
1-31/32
2-17/32
5/8
4-1/2
7/8
2-23/32 5/16-24
1-5/16
10.5
6-7/8
5-5/8
3/4
2-1/8
2-29/32
5/8
4-7/8
1
3-1/32
3/8-24
1-9/16
12.1
7-1/8
5-7/8
3/4
2-5/32
3-1/16
5/8
5-3/4
1-3/16
3-27/64 3/8-24
1-3/4
16.4
3-43/64 3/8-24
P
S
7-5/8
6
3/4
2-5/16
3-3/16
3/4
5-3/4
1-5/16
1-3/4
20.6
7-5/8
6
13/16
2-7/16
3-1/2
3/4
6-1/4
1-5/16
3-7/8
1/2-20
1-15/16
21.4
8-3/8
6-3/4
15/16
2-13/32
3-17/32
3/4
6-7/8
1-11/32
4-3/16
1/2-20
2-1/32
26.7
8-3/8
6-3/4
15/16
2-11/16
3-31/32
3/4
7
1-9/16
4-25/64 1/2-20
2-7/32
20.0
*2 AT 120° For Load Ratings, See Engineering Section, Page 237. Replacement Bearings are shown on Page 214.
P-1930-BG
04/10
Boston Gear 800-825-6544
229
Mounted Ball Bearings MBP Series Piloted Flanged Units – Medium Duty; Extended Inner Race – Setscrew Locking Features — One-piece high grade cast iron housing. Deep groove ball bearings for high radial and thrust loads. Precision machined housing bore and spherical outer race for full self-alignment. Synthetic lip type seal with steel flinger. Positive locking by setscrews through extended inner race. 1/4-28 threaded grease fitting and channel through outer race allow relubrication.
F
ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number MBP-1-7/16 MBP-1-1/2 MBP-1-11/16 MBP-1-3/4 MBP-1-15/16 MBP-2 MBP-2-3/16 MBP-2-1/4 MBP-2-7/16 MBP-2-1/2 MBP-2-11/16 MBP-2-15/16 MBP-3 MBP-3-7/16 MBP-3-1/2
Bore G J
S
1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-7/16 3-1/2
L
R N K
P
H M D
F B SQUARE
E
A SQUARE
STANDARD TOLERANCES Dimensions
Item Code 64607 64608 64609 64610 64611 64612 64613 64614 64615 64616 64617 64618 64619 64620 64621
Tolerance
Bore
1-7/16-1-3/4 1-15/16-3-1/2
+.0010 to –.0000 +.0012 to –.0000
K
All
+.000 to –.002
ALL DIMENSIONS IN INCHES
Bore
J
K
L
4 4
3-5/8 3-5/8
3/4 3/4
R* Approx. Setscrew S Weight UNF (Lbs.) 7/16 2-1/4 1-27/32 5/16-24 1-9/64 5.5 7/16 2-9/32 2-3/32 5/16-24 1-3/16 6.0
4-15/16 3-5/8 1-3/8 1-11/16 1/2 11/32 15/16 4-1/2 4-1/4
3/4
7/16 2-9/16 2-17/64 5/16-24 1-9/32
6.8
5-3/16 3-13/16 1-3/8 1-21/32 1/2 17/32 15/16 4-3/4 4-1/2
7/8
7/16
2-3/4 2-23/32 5/16-24 1-5/16
10.5
1
1/2
3-1/16 3-1/32
3/8-24 1-9/16
12.1
1/2
3-9/32 3-27/64
3/8-24
1-3/4
16.4
7-1/8 5-5/16 1-21/32 2-5/32 5/8 29/32 1-5/32 6-9/16 6-3/8 1-5/16
1/2 3-11/32 3-43/64
3/8-24
1-3/4
20.6
7-1/8 5-5/16 1-7/8
5/8 3-23/32 3-7/8
1/2-20 1-15/16 21.4
5/8
1/2-20 2-7/32
A
1-7/16 1-1/2 1-11/16 1-3/4 1-15/16 2 2-3/16 2-1/4 2-7/16 2-1/2 2-11/16 2-15/16 3 3-7/16 3-1/2
B
D
E
F Bolt
G
H
4-1/4 3-3/32 1-5/16 1-17/32 7/16 13/32 7/8 4-1/4 3-3/32 1-11/32 1-9/16 7/16 3/8 29/32
5-13/16 4-1/4 1-15/32 1-7/8 6-1/4 4-19/32 1-5/8
2-1/8 2-3/8
1/2 11/16 31/32 5-3/8
5
1/2 13/16 1-1/8 5-3/4 5-1/2 1-3/16 5/8
7/8
1-1/4 6-9/16 6-3/8 1-5/6
8-3/8 6-3/32 1-31/32 2-21/32 3/4 1-1/8 1-11/32 7-3/4 7-3/8 1-9/16
M
N
P
4-5/16 4-25/64
30.0
*2 AT 120° For Load Ratings, See Engineering Section, Page 237 Replacement Bearings are shown on Page 214.
230
Boston Gear 800-825-6544
P-1930-BG
04/10
Mounted Ball Bearings A Series Adjustable Shaft Supports – Standard Duty; Eccentric Locking Collar
E
R F
W
Features —
D MAX.
S
N
O
D MIN.
L
K
M
B
F
Rigid one piece housing. Chrome alloy steel balls. Spherical outer race. Synthetic lip type seals. Eccentric locking collar. 1/4-28 threaded grease fitting.
G A
H
C
ORDER BY CATALOG NUMBER OR ITEM CODE
Catalog Number 3A-1/2 3A-5/8 4A-3/4 5A-7/8 5A-15/16 5A-1 6A-1-1/8 6A-1-3/16 6A-1-1/4S
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S
Item Code 07008 07010 07012 07016 07018 07020 07024 07026 07028
STANDARD TOLERANCES Dimensions Bore
Tolerance
All
+.001 to –.000
ALL DIMENSIONS IN INCHES
D Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S
Bore 1/2 5/8 3/4 7/8 15/16 1 1-1/8 1-3/16 1-1/4S
A
B
C
Min.
Max.
E
F
G Max.
Min.
H Max.
7-1/8
5-1/8
3-1/8
2-13/32
6-1/16
4-7/8
2-3/4
7-7/16
2-1/2
3-21/32
7-1/8
5-1/8
3-1/8
2-17/32
6-1/16
4-7/8
2-3/4
7-9/16
8-1/4
6-1/4
3-3/4
2-25/32
7-1/16
5-11/16
3-1/8
8-11/16
3
4-9/32
11-1/4
8-1/8
4-1/2
3-1/2
9-15/16
7-11/16
4-3/8
11-25/32
3-7/16
6-7/16
2-13/16 3-17.32’
K
L
M
N
O
R
S
W
Bolt Size
5/8
3-15/16
2-1/4
5/8
3/8
1-9/16
11/16
15/16
5/16
5/8
3-15/16
2-1/4
5/8
3/8
1-23/32
11/16
1-3/64
5/16
3/4
4-13/16
2-3/4
3/4
1/2
1-3/4
15/16
1-1/16
7/16
1
6-3/8
3-1/4
1-1/4
5/8
2-5/16
1-1/8
1-3/16
9/16
NOTE: For applications where direction of radial bearing load is away from base, it is recommended that a hole be drilled near the end of each post and a suitable size pin inserted, as a safety precaution. Replacement Bearings are shown on Page 213.
P-1930-BG
04/10
Boston Gear 800-825-6544
231
Mounted Bearings TU Series Take-Up Frames Boston Gear Take-up Frames are designed for use with Boston’s Standard Duty Pillow Blocks. Pillow Block units are not included.
Features —
F
Bolted steel frame 3 or 4 bolt frame mounting Bolt hole centers adjustable
ADJUSTMENT
K W
T1 BOLTS
K
D
“T” BOLTS
D
D
MOUNTING BOLTS “F” V Y
L
E
V H
R
G E
U
Z
Y Z
V E
B C
ALL DIMENSIONS IN INCHES
Pillow Block Bore
Adjustment 6 1/2-1 9 12 6 9 1-1/8-1-3/4 12 18 9 12 1-15/16-2-7/16 18 24
B 16 19 22 19-1/8 22-1/8 25-1/8 31-1/8 25-5/16 28-5/16 34-5/16 40-5/16
C D 17 20 1-3/4 23 20-1/4 23-1/4 26-1/4 2-3/8 32-1/4 26-9/16 29-9/16 3 35-9/16 41-9/16
E
F Bolts
G
H
K
L
R
2-5/8
3/8
1-5/8
3/16
5
2-1/8
1-3/4
3-1/8
1/2
2-1/8
1/4
6-9/16
2-11/16
2-3/16
4
5/8
2-3/4
5/16
8-5/32
3-5/16
2-3/4
ORDER BY CATALOG NUMBER OR ITEM CODE
Pillow Block Bore
Adjustment 6 1/2-1 9 12 6 9 1-1/8-1-3/4 12 18 9 12 1-15/16-2-7/16 18 24
232
Bolts
W
T
T1
5/16
3/8
3/8
1/2
1/2
5/8
Boston Gear 800-825-6544
U 15-1/4 18-1/4 21-1/4 18-1/8 21-1/8 24-1/8 30-1/8 24-1/16 27-1/16 33-1/16 39-1/16
V
Min.
Max.
Y
Z
1-1/16
3
5
1-1/16
15/16
1-11/32
3-3/4
7-1/4 1-11/32
1-3/32
1-5/8
4-1/4
9
1-11/16
1-13/16
Catalog Number TU816-6 TU816-9 TU816-12 TU1828-6 TU1828-9 TU1828-12 TU1828-18 TU3139-9 TU3139-12 TU3139-18 TU3139-24
Item Code 29827 29828 29829 29830 29831 19832 29833 29834 29835 29836 29837
P-1930-BG
04/10
Engineering Information Analysis of Radial Bearing Loads for Unmounted and Mounted Rolling Elements
Radial Load Radial bearing loads are determined by analysis of all the forces applied to a shaft. In many instances this becomes a complex analysis and should be performed with expertise. However, many applications involve simple loading and may be calculated with basic information. Many shafts are supported by two bearings, with a load “L” applied either between two bearings, as in Figure 1; or with load overhung, as in Figure 2. In either case, the reaction on the bearing is dependent upon: a. The point of load application b. The magnitude of the load. c. The distance between the bearing centers. With the above information known, the reactions, due to the loads, on the bearings, may be calculated.
BEARING 1
BEARING 2
In this text we are mainly considering radial loading of the shaft. Each load should be calculated individually as the sum of these will be used to calculate the load imposed on the bearings.
Load Connection Factor Loads applied by various types of drives may be calculated with use of the following load connection factors and formula: 2TK L= D L =Load (Lbs.) (63025)(H.P.) T = Torque (Lb-Ins.) T= RPM K = Load Connection Factor D = P.D. of Sprocket, Pinion, or Pulley (In.)
Load Connection Factors (K) Sprocket or Timing Belt . . . . . . . . . . . . . . . . . . . . . 1.00 Pinion and Gear Drive. . . . . . . . . . . . . . . . . . . . . . . 1.25 Pulley and V-Belt Drive . . . . . . . . . . . . . . . . . . . . . 1.50 Pulley and Flat-Belt Drive . . . . . . . . . . . . . . . . . . . . 2.50
Example “A” FIGURE 1.
When the applied load is located between the two bearings, it is commonly referred to as “Straddle” loading.
BEARING BEARING 1 2
FIGURE 2.
When the applied load is located outside the two bearings, it is commonly referred to as “Overhung” loading. The loading of a shaft usually is the result of forces generated by gearing, sprockets or pulleys, the weight of these parts and friction. Normally the weight of the parts and friction are ignored. However, if the weight of these parts is large, they should be considered.
P-1930-BG
04/10
Load smooth and steady 8 hours per day. #40 Chain Drive 30 Tooth Sprocket 4.783 Sprocket P.D. 2 HP 500 RPM 5/8 Shaft Dia. With the above information the load can be calculated as follows: 2TK L= D T=
63025 x 2 = 252 In. Lbs. RPM
K = 1.0 From Load Connection Factor Table D = 4.783 L=
2 x 252 x 1.0 4.783
L =105 lbs. Radial Load
Boston Gear 800-825-6544
233
F
Engineering Information Analysis of Radial Bearing Loads for Unmounted and Mounted Rolling Elements (Cont’d)
F
Magnitude of Load Acting on Bearings
Example “B”
Once the applied load or loads that act on the shaft is determined, we may now apply it to the bearings.
Load given in Example “A” = 105 lbs. is in overhung condition, as shown.
There are many types of loadings that can be imposed on a bearing:
BRG. 1
BRG. 2
Straddle Loaded Bearings Radial Applied Load Acting On Shaft 3.00 BRG. 1
BRG. 2
1.50 4.50 LA 105
A
B
LOAD BEARING I L xB LI = A A
LA C
Load Bearing I = L I =
LI =
LA x B C
Load Bearing II = L II =
L I = 52.5 lbs.
LA x A C LOAD BEARING II L xC L2 = A A
Check L I + L II = L A
Overhung Loaded Bearings Radial Applied Load Acting On Shaft
BRG. 1
105 x 1.50 3.00
L2 =
BRG. 2
105 x 4.5 3.0
L 2 = 157.5 lbs.
CHECK L II – L I = LA
A
B
157.5 – 52.5 = 105
C
105 = 105
LA Load Bearing I = L I =
LA x B A
Load Bearing II = L II =
LA x C A
Check L II – L I = L A
234
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Ball and Mounted Ball Bearing Selection
Bearing selection for the majority of applications can be made directly from the Load Rating Tables. Mounted bearings are listed individually on each page. The mounted bearings tables are located on Pages 108-109. The following procedure may be followed: 1. Determine the actual radial load to be supported by the bearing. For applications involving heavy shock loads or severe vibration, actual load should be multiplied by a service factor from 1.1 to 1.5 depending on the severity of these conditions.
2. Select a bearing from the table that has a radial load rating equal to or greater than the actual radial load determined in Step 1, for the life desired at the required operating speed. Ball bearing rating tables are based on an “Average” bearing life of 2500 hours. Average or medium life (L50) is the life that may be expected from 50% or more of a given group of bearings operating under an identical steady load condition. The minimum life (L10) is the life expectancy of at least 90% of a group of bearings and is approximately 1/5 average.
Example ‘C’ Service Factor .8 1.0 1.25 1.50 1.75 2.0
Operating Conditions Uniform — not more than 15 minutes in 2 hours. Moderate Shock — not more than 15 minutes in 2 hours. Uniform — not more than 10 hours per day Moderate Shock — not more than 10 hours per day. Uniform — more than 10 hours per day. Heavy Shock — not more than 15 minutes in 2 hours. Moderate Shock — more than 10 hours per day. Heavy Shock — not more than 10 hours per day. Heavy Shock — more than 10 hours per day.
Using loading from Example “B,” select a mounted bearing suitable to give an average life (L50) of 15,000 hours. Known— Load Bearing I = 52.5 Load Bearing II = 157.5 Shaft Diameter 5/8 (From Example “A”) Service Factor 1 (From Example “A”) 500 RPM (From Example “A”) From the Rating Table, Page 237, as shown, a standard duty bearing (either eccentric collar or extended set screw inner race) may be selected.
P-1930-BG
04/10
Boston Gear 800-825-6544
235
F
Engineering Information Mounted Ball Bearing Radial Load Capacities Light Duty PS Series Pillow Blocks
Shaft Sizes
F
1/2 5/8
3/4
7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4
Average Life (L50) Hours 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000
50 300 300 300 300 300 350 350 350 350 350 400 400 400 400 400 600 600 600 600 600
100 300 300 300 300 300 350 350 350 350 350 400 400 400 400 400 600 600 600 600 600
Speed (R.P.M.) Radial Load (Pounds) 500 1000 1500 300 300 300 300 300 300 300 245 215 280 220 195 245 195 170 350 350 350 350 350 350 350 330 285 350 300 260 350 260 225 400 400 400 400 400 400 400 360 315 400 325 285 360 285 250 600 600 600 600 600 600 600 500 435 570 455 395 500 395 345
1800 300 300 200 180 160 350 350 270 245 215 400 400 295 270 235 600 600 410 375 325
2000 300 300 195 175 155 350 350 260 235 205 400 400 285 260 225 600 600 395 360 315
2500 300 300 180 165 140 350 350 240 220 190 400 400 265 240 210 600 600 370 335 295
100 600 600 530 480 420 700 700 700 645 560 800 800 775 705 615 1100 1100 1080 980 855 1400 1400 1400 1295 1130
Speed (R.P.M.) Radial Load (Pounds) 500 1000 1500 600 530 460 530 420 365 310 245 215 280 220 195 245 195 170 700 700 620 700 560 490 415 330 285 375 300 260 330 260 225 800 775 680 775 615 540 455 360 315 410 325 285 360 285 250 1100 1080 940 1080 855 750 630 500 435 570 455 395 500 395 345 1400 1400 1245 1400 1130 990 835 660 580 755 600 525 660 525 460
1800 435 385 200 180 160 585 460 270 245 215 640 505 295 270 235 885 700 410 375 325 1175 930 545 495 430
2000 420 330 195 175 155 560 445 260 235 205 615 490 285 260 225 855 680 395 360 315 1130 895 525 475 415
2500 390 310 180 165 140 520 415 240 220 190 570 455 265 240 210 795 630 370 335 295 1050 835 485 440 385
PS2 and PS3 Series Flanged Units Shaft Sizes 1/2 5/8
3/4
7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4S 1-1/4 1-5/16 1-3/8 1-7/16
236
Average Life (L50) Hours 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000
50 600 600 600 600 530 700 700 700 700 700 800 800 800 800 775 1100 1100 1100 1100 1080 1400 1400 1400 1400 1400
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Mounted Ball Bearing Radial Load Capacities XL, S, H, L, F, T and MB Series Series XL All S (All) H-L-F-T Shaft Size
MB (All) Shaft Size
1/2 5/8
—
3/4
—
7/8 15/16 1
—
1-1/8 1-5/16 1-1/4S
—
1-1/4 1-5/16 1-3/8 1-7/16
—
1-1/2
1-7/16
1-5/8 1-11/16 1-3/4
1-1/2
1-15/16
1-11/16 1-3/4
2 2-3/16
1-15/16 2
2-1/4 2-7/16
2-3/16 2-1/4
—
2-7/16 2-1/2
—
2-11/16
—
2-15/16 3
—
3-3/16 3-1/4
—
3-7/16 3-1/2
P-1930-BG
04/10
Speed (R.P.M.) Radial Load (Pounds) Average Life (L50) Hours 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000 2,500 5,000 7,500 15,000 75,000
50 1580 1255 730 665 580 1930 1530 895 810 710 2115 1675 980 890 775 2955 2340 1370 1245 1085 3890 3085 1805 1635 1430 4935 3915 2290 2080 1815 5295 4200 2455 2230 1950 5295 4200 2455 2230 1950 6545 5190 3035 2755 2410 7910 6275 3670 3330 2910 9395 7455 4630 3955 3455 9990 7925 4635 4210 3675 11720 9300 5400 4935 4315 12630 10020 5860 5320 4645 14500 11505 6730 6110 5335
100 1255 995 580 525 460 1530 1215 710 645 560 1675 1330 775 705 615 2340 1855 1085 985 860 3085 2445 1430 1300 1135 3915 3105 1815 1605 1440 4200 3330 1950 1770 1545 4200 3330 1950 1770 1545 5190 4120 2410 2190 1910 6275 4975 2910 2645 2310 7455 5910 3455 3140 2740 7925 6285 3675 3340 2915 9300 7375 4315 3920 3420 10020 7945 4645 4225 3685 11505 9125 5335 4850 4235
500 730 580 340 305 270 895 710 415 375 330 980 775 455 410 360 1370 1085 635 575 505 1805 1430 835 760 665 2290 1815 1060 965 845 2455 1950 1140 1035 905 2455 1950 1140 1035 905 3035 2410 1410 1280 1120 3670 2910 1700 1545 1350 4360 3455 2020 1835 1605 4635 3675 2150 1950 1705 5440 4315 2525 2290 2000 5860 4645 2720 2470 2160 6730 5335 3120 2835 2480
1000 580 460 270 245 210 710 560 330 300 260 775 615 360 325 285 1085 860 505 455 400 1430 1135 665 600 525 1815 1440 845 765 665 1950 1545 905 820 715 1950 1545 905 820 715 2410 1910 1120 1015 885 2910 2310 1350 1225 1070 3455 2740 1605 1455 1270 3675 2915 1705 1550 1350 4315 3420 2000 1820 1585 4645 3685 2160 1960 1710 5335 4235 2480 2250 1965
1500 505 400 235 210 185 620 490 285 260 225 680 540 315 285 250 945 750 440 400 350 1250 990 580 525 460 1585 1260 735 665 585 1700 1350 790 715 625 1700 1350 790 715 625 2100 1670 975 885 775 2540 2020 1180 1070 935 3020 2400 1400 1270 1110 3210 2550 1490 1350 1180 3765 2990 1750 1585 1385 4055 3225 1885 1710 1495 4660 3700 2165 1965 1715
1800 475 375 220 200 175 585 460 270 245 215 640 505 295 270 235 890 705 415 375 325 1175 930 545 495 430 1495 1180 690 630 550 1600 1270 740 675 590 1600 1270 740 675 590 1980 1570 915 835 725 2390 1805 1110 1010 880 2840 2250 1315 1200 1045 3020 2395 1400 1275 1110 3545 2810 1645 1495 1305 3820 3025 1770 1610 1405 4385 3475 2035 1850 1615
2000 460 365 210 195 170 560 445 260 235 205 615 490 285 260 225 860 680 400 360 315 1135 900 525 475 415 1440 1140 665 605 530 1545 1225 715 650 570 1545 1225 715 650 570 1910 1515 885 805 705 2310 1830 1070 970 850 2740 2175 1270 1155 1010 2915 2310 1350 1230 1075 3420 2715 1585 1440 1260 3685 2925 1710 1555 1360 4235 3355 1965 1785 1560
2500 425 340 195 180 155 520 415 240 220 190 570 455 265 240 190 800 635 370 335 295 1055 835 490 445 385 1335 1060 620 565 490 1435 1140 665 605 530 1435 1140 665 605 530 1775 1410 825 745 655 2145 1700 995 905 790 2545 2020 1180 1075 940 2705 2150 1255 1140 995 3175 2525 1475 1340 1170 3420 2720 1590 1445 1260 3930 3120 1825 1655 1450
3000 400 320 185 170 150 490 390 225 205 180 540 425 250 225 200 750 595 350 315 275 990 785 460 415 365 1260 1000 585 530 465 1350 1070 625 570 500 1350 1070 625 570 500
3600 375 300 175 160 140 460 365 215 195 170 505 400 235 210 185 705 560 325 295 260 930 740 430 390 340 1180 940 550 500 435
4000 365 290 170 155 135 445 355 205 185 165 490 385 225 205 180 685 540 315 285 250 900 715 415 380 330
4500 350 275 160 145 130 430 335 200 180 155 470 370 215 195 170 655 515 305 275 240
5000 340 270 155 140 125 415 330 190 175 150 455 360 210 190 165
These ball bearings will also accommodate thrust loads of up to 50% of the radial load ratings listed with no resultant decrease in the radial load capacity. For ratings higher than 5000 RPM, consult Factory.
Boston Gear 800-825-6544
237
F
Engineering Information Application Data – Unmounted Bearings
Lubrication
F
Precautions
Either oil or grease can be used for lubricating bearings. Boston bearings are supplied slushed (open bearings) with a rust inhibiting oil, or prepacked with grease (sealed or shielded bearings) at the factory. However, special purpose lubricants can be used when required. It is recommended that bearing selection include consideration of the lubricant specifications and whether the lubricant will be applied in service or prepacked at the factory. Good lubrication adds measurably to the life of a bearing.
1. Keep bearings clean and protected with covering until ready to install. 2. Make preliminary examination of shaft and housing for correct window size. Also check for chips, filings and burrs. 3. Press inner race on shaft or outer race in housing preferably by use of arbor press. Never transmit mounting press forces through balls from one race to the other. 4. Avoid hammer blows.
Recommended Shaft Fits — 1600-3000-7500-7600 Series Bearing Bore Max. .2500 .3125 .3750 .4375 .5000 .6250 .7500 .8750 1.0000 1.1250 1.2500
Min. .2495 .3120 .3745 .4370 .4995 .6245 .7495 .8745 .9995 1.1245 1.2405
Shaft Rotating Shaft Theoretical Diameter Fit Max. Min. Tight Loose .2500 .2495 .0005 .0005 .3125 .3120 .0005 .0005 .3750 .3745 .0005 .0005 .4375 .4370 .0005 .0005 .5000 .4995 .0005 .0005 .6250 .6245 .0005 .0005 .7500 .7495 .0005 .0005 .8752 .8747 .0007 .0003 1.0002 .9997 .0007 .0003 1.1252 1.1247 .0007 .0003 1.2502 1.2497 .0007 .0003
Shaft Stationary Shaft Theoretical Diameter Fit Max. Min. Tight Loose .2495 .2490 .0000 .0010 .3120 .3115 .0000 .0010 .3745 .3740 .0000 .0010 .4370 .4365 .0000 .0010 .4995 .4990 .0000 .0010 .6245 .6240 .0000 .0010 .7495 .7490 .0000 .0010 .8745 .8740 .0000 .0010 .9995 .9990 .0000 .0010 1.1245 1.1240 .0000 .0010 1.2495 1.2490 .0000 .0010
Recommended Housing Fits — 1600-3000-7500-7600 Series Bearing Outside Diameter Max. Min. .6875 .6870 .8750 .8745 .9063 .9058 1.1250 1.1245 1.3750 1.3745 1.6250 1.6245 1.7500 1.7495 2.0000 1.9994 2.5000 2.4994 2.5625 2.5619
Housing Rotating Housing Inside Theoretical Diameter Fit Max. Min. Tight Loose .6877 .6870 .0005 .0007 .8752 .8745 .0005 .0007 .0965 .9058 .0005 .0007 1.1252 1.1242 .0008 .0007 1.3752 1.3742 .0008 .0007 1.6252 1.6242 .0008 .0007 1.7502 1.7492 .0008 .0007 2.0002 1.9990 .0010 .0008 2.5002 2.4990 .0010 .0008 2.5627 2.5615 .0010 .0008
Housing Stationary Housing Inside Theoretical Diameter Fit Max. Min. Tight Loose .6880 .6875 .0000 .0010 .8755 .8750 .0000 .0010 .9068 .9063 .0000 .0010 1.1255 1.1250 .0000 .0010 1.3755 1.3750 .0000 .0010 1.6258 2.6250 .0000 .0013 1.7508 1.7500 .0000 .0013 2.0010 2.0000 .0000 .0016 2.5010 2.5000 .0000 .0016 2.5635 2.5625 .0000 .0016
Note: 3000 Series Dim Are Nom. +.0005 7600 Series Dim Are Nom. +.0008
238
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Application Data – Mounted Bearings
Lubrication Boston Gear ball and tapered roller bearing Pillow Blocks and Flanged Cartridges are factory lubricated prior to shipping. Those designed with the relubrication feature periodically require grease during operation. The interval between relubrication and the amount necessary to insure a long operational life are determined by the specific application.
Mounting Setscrew Locking Type Housing should be fastened to the mounting structure. Back out setscrews to clear shaft. After lubricating the shaft, slide it through the bearings and tighten setscrews to recommended torque, see Table below.
Loading, speed, and environmental conditions must be considered when determining the proper interval between relubrication.
Eccentric Locking Collar Type
Weeks Hours 1251- 501- 751- 1001- 1501- 2001- 2501 Operated 250 500 750 1000 1500 2000 2500 3000 Per Day RPM RPM RPM RPM RPM RPM RPM RPM 8 12 12 10 7 5 4 3 2 16 12 7 5 4 2 2 1 1 24 10 5 3 2 1 1 1 1
Turn eccentric collar “A” in the direction in which the shaft will rotate. Hand tight is often sufficient but a spanner wrench or drift pin may be inserted in spanner wrench hole “C” and used to set the collar (Note: DO NOT USE A DIRECT HAMMER BLOW to set the collar as such a blow may fracture the inner ring.) Not recommended for severe reversing applications.
The table above may be used as a guide for establishing lubrication intervals for applications where contamination is not present. For unusual operating conditions not covered by the table, consult the factory for our recommendations. Normal bearing operation temperatures range from “cool-to-the-touch” to “too-hot-to-touch” for more than a few seconds, depending on the load, speed, and ambient temperature. The type of grease used in Boston bearing units allows satisfactory operation at temperatures to 225°F and speeds to 6500 RPM.
When sliding the shaft through the bore bearing inner ring, be sure that the counterbore of eccentric collar “A” is toward eccentric boss “B” on inner ring.
Tighten set screw in eccentric collar firmly against shaft to recommended torque, see Table below.
Set Screw Diameter 1/4 5/16 3/8 7/16 1/2 5/8
Hex Width Across Flats 1/8 5/32 5/16 7/32 1/4 5/16
Tightening Torque (In.-Lbs.) 70 140 220 350 515 1200
Bearings are prelubricated with a No. 2 consistency lithium base grease, and it is recommended that the Lith EP-2 or an equivalent grease be used when relubrication is requierd. When relubricating bearings, it is preferable that the shaft be rotating. This rotation of the shaft will aid in preventing excessive filling and insure proper distribution of the grease. Grease should be added slowly to the bearing. When a slight bead appears from under the seal, the bearing will usually contain the proper amount of lubricant.
Precautions The shaft must be clean, straight and free from nicks and burns and should fit the bearing as snugly as possible. Recommended shaft tolerance — Low Speed (or Light Load) +.0 to –.002; Normal Speed (or Load) +.0 to –.001; High Speed (or Heavy Load) a light press fit is desirable. The use of flats at setscrew locations will permit ease of shaft removal.
P-1930-BG
04/10
NOTE: PS, PS2 and PS3 series: It is particularly important on these units that shaft be in place before the housing is secured to the mounting structure. The self-aligning steel stampings clamp the outer race when bolts are tightened making further shaft alignment impossible.
Boston Gear 800-825-6544
239
F
Notes
F
240
Boston Gear 800-825-6544
P-1930-BG
04/10
Chains
G Section Contents ROLLER CHAINS General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 Multi-Strand Selection Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Transmission Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Conveyor Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Heavy Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246-249 Roller Chain Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 Hollow Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 BLOCK CHAINS Selection Charts/Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 LEAF (CABLE) CHAINS Selection Charts/Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 LADDER CHAINS Selection Charts/Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 MINIATURE ROLLER CHAINS Selection Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 CHAIN PULLERS/CHAIN BREAKING TOOLS Selection Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
P-1930-BG
04/10
Boston Gear 800-825-6544
241
Roller Chains Description of Roller Chain Parts
Chain Dimensions Principal dimensions of roller chain which identify the chain definitely are pitch, roller width, roller diameter and pin diameter.
G
PITCH is the linear distance from center to center of adjacent pins or rivets. WIDTH is the distance between inside plates or length of roller. DIAMETER is the actual outside diameter of roller (or pin).
Chain Types
Chain Links
Boston Roller chains can be furnished in two types — RIVETED and DETACHABLE.
RIVETED TYPE Riveted type chains are recommended for high speed drives, as a greater rigidity of the pins and side plates is secured from this construction. Rivited type is considered standard on the smaller sizes up to and including 3/4 “ pitch and will be supplied unless Detachable type is specified. Detachable type chain is not recommended up to and including 5/8” pitch, but is available in cotter pin construction in 3/4” pitch.
DETACHABLE (Cottered) TYPE Detachable type chains are recommended for slower speed drives, especially in the larger pitches where ease of assembly and disassembly becomes an important factor. Detachable type with cotter pins is considered standard on all sizes 1” pitch and above and will be supplied unless riveted type is specified. Both types are available.
242
Boston Gear 800-825-6544
CONNECTING LINK (Spring Clip) Standard for Nos. 25, 35, 40, 41, 50 and 60 single and multiple-width chains.
CONNECTING LINK (Cotter Pin) Standard for Nos. 80, 100, 120, 140, and 160, 200 and 240 single and multiplewidth chains.
ROLLER LINK Furnished as complete assemblies, roller links are standard for all chain sizes. The same roller links are used for single and multiple-width chains.
ONE PITCH OFFSET LINK (For standard service) For use whenever chain length contains an odd number of pitches. These links are standard for all chain sizes in single or multiple-widths. (Not available for 25 pitch.)
TWO PITCH OFFSET LINK (For severe service) Consists of a roller link and an offset link riveted together. Two pitch offset assemblies should be specified for severe service. P-1930-BG
04/10
Roller Chains Ordering Information
STEEL – SINGLE STRAND Chain Pitch & Number
Standard Package Quantities
Catalog Number
10' PKG. 100' REEL 250' REEL 500' REEL 10' PKG. 100' REEL 250' REEL 500' REEL 10' PKG 100' REEL 250' REEL 10' PKG 100' REEL 250' REEL 500' REEL 10' PKG 10' PKG 100' REEL 250' REEL 10' PKG 100' REEL 10' PKG 10' PKG 50' REEL 10 PKG
1/4"-25*
3/8" - 35*
1/2" - 40
1/2" - 41
1/2" - 43 5/8" - 50
3/4" - 60
1" - 80 1-1/4" - 100 1-1/2" - 120 1-3/4" - 140 2" - 160 2-1/4" - 180 2-1/2" - 200 3" - 240
25 - 10' 25 100' 25 - 250' 25 - 500' 35 - 10' 35 - 100' 35 - 250' 35 - 500' 40 - 10' 40 - 100' 40 - 250' 41 - 10' 41 - 100' 41 - 250' 41 - 500' 43 - 10' 50 - 10' 50 - 100' 50 - 250' 60 RIV - 10' 60 RIV - 100' 60 DET -10' 80 RIV - 10' 80 RIV - 50' 80 DET - 10' 100 RIV - 10' 10’ PKG 100 DET - 10' 120 RIV - 10' 10' PKG 120 DET - 10' 140 RIV - 10'2-1/2" 10'2-1/2" PKG 140 DET - 10'2-1/2" 160 RIV - 10' 10' PKG 160 DET - 10' 180 RIV - 10' 10' PKG 180 DET - 10' 200 RIV - 10' 10' PKG 200 DET - 10' 240 RIV - 5' 5' PKG 240 DET - 5'
Item Code
Standard Package Quantities
68948 69010 68950 68951 68953 68954 68955 68956 68959 68960 68961 68964 68965 68966 68967 68947 68984 68985 68986 68989 68990 68991 68808 29948 68812 68936 68937 68940 68941 30440 30438 30462 30460 50219 30478 31066 30488 50210 58927
1/4" - 25-3* 3/8" - 35-3* 1/2" - 40-3 5/8" - 50-3
10' PKG 10' PKG 10' PKG 10' PKG
STEEL - DOUBLE STRAND 1/4" - 25-2* 3/8" - 35-2" 1/2" - 40-2 5/8" - 50-2 3/4" - 60-2 1" - 80-2 1-1/4" - 100-2 1-1/2” - 120-2 1-3/4" - 140-2 2" - 160-2 2-1/4" - 180-2 2-1/2" - 200-2 3" - 240-2
P-1930-BG
10' PKG 10' PKG 10' PKG 10' PKG
25-2-10' 35-2-10' 40-2-10' 50-2-10' 60-2 RIV - 10' 10' PKG 60-2- DET - 10' 80-2 RIV - 10' 10' PKG 80-2 DET - 10' 100-2 RIV - 10' 10' PKG 100-2 DET - 10' 120-2 RIV - 10' 10' PKG 120-2 DET - 10' 10'2-1/2" PKG 140-2RIV-10'2-1/2" 140-2DET-10'2-1/2" 160-2 RIV - 10' 10' PKG 160-2 DET - 10' 10' PKG 180-2 DET-10' 200-2 RIV-5' 5' PKG 200-2 DET-5' 5' PKG
04/10
240-2 DET-5'
HEAVY SERIES‡
STEEL – TRIPLE STRAND Chain Pitch & Number
45886 69011 69014 69017 69020 68935 68813 68816 68938 68939 68942 68943 06085 30448 50209 30470 31014 50220 30496
3/4" - 60-3 1" - 80-3 1-1/4" - 100-3 1-1/2" - 120-3 1-3/4" - 140-3 2" - 160-3 2-1/4" - 180-3 2-1/2" - 200-3 3" - 240-3
Catalog Number
25-3-10' 35-3-10' 40-3-10' 50-3-10' 60-3- RIV - 10' 10' PKG 60-3 DET - 10' 80-3 RIV - 10' 10' PKG 80-3 DET - 10' 100-3 RIV - 10' 10' PKG 100-3 DET - 10' 120-3 RIV - 10' 10' PKG 120-3 DET - 10' 10'2-1/2" PKG 140-3DET-10'2-1/2" 5' PKG 160-3 DET-5' 5' PKG 180-3 DET-5' 5' PKG 200-3 DET-5' 5' PKG 240-3 DET-5'
Item Code 45890 69057 69060 69063 69066 68934 68818 68822 69081 69082 69083 69087 31142 31148 31160 30966 58304
10' PKG 10' PKG 10' PKG
3/4" - 60-4
10' PKG
1" - 80-4
10' PKG
1-1/2" - 120-4 1-3/4" 140-4 2" - 160-4 2-1/2" - 200-4
10' PKG 5' PKG 5' PKG 5' PKG
35-4-10' 40-4-10' 50-4-10' 60-4 RIV - 10' 60-4 DET - 10' 100-4 RIV - 10' 100-4 DET - 10' 120-4 DET - 10' 140-4 DET - 5' 160-4 DET - 5' 200-4 DET - 5'
Standard Package Quantities
3/4" - 60H
10' PKG
1" - 80H 1-1/4" - 100H 1-1/2" - 120H 1-3/4" - 140H 2" - 160H 2-1/2" - 200H
Catalog Number
Item Code
60H RIV - 10' 60H DET - 10' 10' PKG 80H RIV - 10' 80H DET - 10' 10' PKG 100H RIV - 10' 100H DET - 10' 10' PKG 120H RIV - 10' 120H DET - 10' 10'2-1/2" PKG 140HRIV-10'2-1/2" 140HDET-10'2-1/2" 10' PKG 160H RIV - 10' 160H DET - 10' 10' PKG 200H DET - 10'
68994 68981 69077 60979 30958 30956 06401 30960 50218 30962 30234 30964 58293
STANDARD CUT-TO-LENGTH CHAIN
STEEL - QUAD STRAND 3/8" - 35-4* 1/2" - 40-4 5/8" - 50-4
Chain Pitch & Number
68839 68842 68843 68932 68933 50216 31136 31184 31190 31154 31172
—48 HOUR SERVICE— UP TO 50 STRANDS Contact factory for larger quantities No extra charge for this service!
STAINLESS STEEL 3/8" - 35* 1/2" - 40 5/8" - 50 3/4" - 60
10' PKG 100' REEL 10' PKG 10' PKG 10' PKG 10' PKG
1" - 80
10' PKG
1/4" - 25*
25SS - 10' 25SS - 100' 35SS - 10' 40SS - 10' 50SS - 10' 60SS - 10' 80SS RIV - 10' 80SS DET - 10'
58285 69056 30078 30134 30272 30328 13493 30366
NICKEL PLATED 1/4" - 25* 3/8" - 35* 1/2" - 40 5/8" - 50 3/4" - 60 1" - 80
10' PKG 100' REEL 10' PKG 100' PKG 10' PKG 100' REEL 10' PKG 100' REEL 250' REEL 10' PKG 100' REEL 10' PKG
25NP - 10' 25NP - 100' 35NP - 10' 35NP - 100' 40NP - 10' 40NP - 100' 50NP - 10' 50NP - 100' 50NP - 250' 60NP - 10' 60NP - 100' 80NP - 10'
68709 68710 68713 68714 68718 68719 68723 68724 68725 68723 68729 68732
Item Code 30000 30042 30098 30236 30292 30224 68973
Chain Pitch
Quantity
#25 #35 $40 #50 #60 #80 #41
cut to length cut to length cut to length cut to length cut to length cut to length cut to length
* Non Roller ‡ Heavy Series chain has thicker link plates to resist shock from pulsating loads.
58301
Boston Gear 800-825-6544
243
G
Roller Chains ANSI Standard Double, Triple and Quadruple Widths Dimensions
ALL DIMENSIONS IN INCHES
Chain Pitch Number
C B
E A
H
T
G
G
F PITCH
C
H
E A
B
T
G
F PITCH
C
H
E
A B T
G
F PITCH
H
E
C T A
B
G
F PITCH
E
H Roller Diam.
SINGLE WIDTH 25* 1/4 .125 .130 35* 3/8 .187 .200 40 1/2 .312 .312 S41 1/2 .250 .306 50 5/8 .375 .400 60 3/4 .500 .468 80 1 .625 .625 100 101/4 .750 .750 120 1-1/2 1.000 .875 140 1-3/4 1.000 1.000 160 2 1.250 1.125 180 2-1/4 1.406 1.406 200 2-1/2 1.500 1.562 240 3 1.875 1.875 DOUBLE WIDTH 25-2* 1/4 .125 .130 35-2* 3/8 .187 .200 40-2 1/2 .312 .312 50-2 5/8 .375 .400 60-2 3/4 .500 .468 80-2 1 .625 .625 100-2 1-1/4 .750 .750 120-2 1-1/2 1.000 .875 140-2 1-3/4 1.000 1.000 160-2 2 1.250 1.125 180-2 2-1/4 1.406 1.406 200-2 2-1/2 1.500 1.562 240-2 3 1.875 1.875 TRIPLE WIDTH 25-3* 1/4 .125 .130 35-3* 3/8 .187 .200 40-3 1/2 .312 .312 50-3 5/8 .375 .400 60-3 3/4 .500 .468 80-3 1 .625 .625 100-3 1-1/4 .750 .750 120-3 1-1/2 1.000 .875 140-3 1-3/4 1.000 1.000 160-3 2 1.250 1.125 180-3 2-1/4 1.406 1.406 200-3 2-1/2 1.500 1.562 240-3 3 1.875 1.875 QUADRUPLE WIDTH 25-4* 1/4 .125 .130 35-4* 3/8 .187 .200 40-4 1/2 .312 .312 50-4 5/8 .375 .400 60-4 3/4 .500 .468 80-4 1 .625 .625 100-4 1-1/4 .750 .750 120-4 1-1/2 1.000 .875 140-4 1-4/4 1.000 1.000 160-4 2 1.250 1.125 180-4 2-1/4 1.406 1.406 200-4 2-1/2 1.500 1.562 240-4 3 1.875 1.875
Pin Average Avg. Diam. Ultimate Weight Strength Per Ft. G Lbs. Lbs.
A
B
C
T
F
.31 .47 .65 .51 .79 .98 1.28 1.54 1.94 2.08 2.48 2.81 3.02 3.76
.19 .34 .42 .37 .56 .64 .74 .91 1.14 1.22 1.46 1.74 1.86 2.27
.15 .23 .32 .26 .40 .49 .64 .77 .97 1.04 1.24 1.40 1.51 1.88
.030 .050 .060 .050 .080 .094 .125 .156 .187 .218 .250 .281 .312 .375
.23 .36 .46 .39 .59 .70 .93 1.16 1.38 1.63 1.88 2.13 2.32 2.80
.0905 930 .141 2,300 .156 3,700 .141 2,580 .200 6,400 .234 8,700 .312 15,500 .375 24,000 .437 34,000 .500 46,000 .562 58,000 .687 80,000 .781 95,000 .937 130,000
.104 .21 .41 .28 .69 .96 1.60 2.56 3.60 4.90 6.40 8.70 10.30 16.90
.56 .86 1.20 1.49 1.87 2.42 2.94 3.72 4.00 4.80 5.40 5.86 7.22
.31 .50 .67 .82 1..02 1.32 1.62 2.04 2.19 2.63 2.94 3.28 4.00
.28 .43 .60 .75 .93 1.21 1.47 1.86 2.00 2.40 2.70 2.93 3.61
.030 .050 .060 .080 .094 .125 .156 .187 .218 .250 .281 .312 .375
.23 .36 .46 .59 .70 .93 1.16 1.38 1.63 1.88 2.13 2.32 2.80
.0905 .141 .156 .200 .234 .312 .375 .437 .500 .562 .687 .781 .937
1,860 4,600 7,400 12,800 17,400 31,000 48,000 68,000 92,000 116,000 160,000 190,000 260,000
.20 .41 .81 1.35 1.90 3.15 5.00 7.10 9.50 17.60 17.60 21.00 33.10
.81 1.26 1.78 2.20 2.75 3.58 4.35 5.52 5.94 7.10 8.00 8.68 10.70
.44 .70 .96 1.17 1.46 1.90 2.33 2.94 3.16 3.78 4.22 4.70 5.74
.41 .63 .89 1.10 1.37 1.79 2.18 2.76 2.97 3.55 4.00 4.34 5.35
.030 .050 .060 .080 .094 .125 .156 .187 .218 .250 .281 .312 .375
.23 .36 .46 .59 .70 .93 1.16 1.38 1.63 1.88 2.13 2.32 2.80
.0905 .141 .156 .200 .234 .312 .375 .437 .500 .562 .687 .781 .937
2,790 6,900 11,100 19,200 26,100 46,500 72,000 102,000 138,000 174,000 240,000 285,000 390,000
.30 .60 1.20 2.05 2.75 4.80 7.30 10.70 15.00 19.40 26.50 31.00 49.20
1.06 1.65 2.33 2.91 3.64 4.73 5.76 7.30 7.86 9.40 10.58 11.50 14.14
.56 .90 1.24 1.53 1.90 2.47 3.03 3.83 4.12 4.93 5.52 6.10 7.47
.53 .83 1.17 1.45 1.82 2.37 2.88 3.65 3.93 4.70 5.29 5.75 7.07
.030 .050 .060 .080 .094 .125 .156 .187 .218 .250 .281 .312 .375
.23 .36 .46 .59 .70 .93 1.16 1.38 1.63 1.88 2.13 2.32 2.80
.0905 .141 .156 .200 .234 .312 .375 .437 .500 .562 .687 .781 .937
3,720 9,200 14,800 25,600 34,800 62,000 96,000 136,000 184,000 232,000 320,000 380,000 520,000
.45 .82 1.60 2.75 3.70 6.40 9.80 14.20 20.00 25.00 35.00 41.50 65.00
*Non-Roller
244
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chains Transmission/Conveyor/Heavy Series Double Pitch Dimensions Transmission Series
ALL DIMENSIONS IN INCHES
E H Chain Number Pitch Width Dia. 2040 2050 2060 2080 2100
1 1-1/4 1-1/2 2 2-1/2
.312 .375 .500 .625 .750
A
.312 .400 .468 .625 .750
B
.65 .79 .98 1.28 1.54
Avg. Avg. T G Ultimate Wgt. Thick- F Pin Strgth. Per ness Dia. (Lbs.) Foot Lbs. .060 .46 .156 3,700 .30 .080 .59 .200 6,100 .45 .094 .69 .234 8,500 .68 .125 .88 .312 14,500 1.11 .156 1.16 .375 24,000 1.94
C
.42 .56 .64 .74 .91
.32 .40 .49 .64 .77
C
H
E
A
B T G F PITCH
Conveyor Series OVERSIZE ROLLERS C
H
STANDARD ROLLERS
A
C
E
B
H
A
E
B T
G
T
G
F
F
PITCH
PITCH
ALL DIMENSIONS IN INCHES
H Chain Number
Pitch
C2040 C2050 C2060H C2080H C2100H C2120H C2160H
1 .312 1-1/4 .375 1-1/2 .500 2 .625 2-1/2 .750 3 1.000 4 1.250
E
OverSize Roller .625 .750 .875 1.125 1.562 1.750 2.250
Std. Roller .312 .400 .468 .625 .750 .875 1.125
A
B
C
T
F
G
Avg. Ultimate Strgth. (Lbs.)
.65 .79 1.11 1.41 1.67 2.07 2.60
.42 .56 .65 .80 .98 1.21 1.52
.32 .40 .55 .70 .83 1.03 1.30
.060 .080 .125 .156 .187 .218 .281
.46 .59 .69 .88 1.15 1.37 1.87
.156 .200 .234 .312 .375 .437 .562
3,700 6,100 8,500 14,500 24,000 34,000 58,000
Avg. weight per foot (Lbs.) OverThermoStd. size plastic Roller Roller Roller .32 .55 .33 .53 .84 .54 .92 1.40 .94 1.52 2.21 1.52 2.30 3.75 — 3.70 5.71 — 5.85 8.93 —
Heavy Series ALL DIMENSIONS IN INCHES
Chain Number Pitch 60H 80H 100H 120H 140H 160H 180H 200H
E
H
3/4 .500 .468 1 .625 .625 1-1/4 .750 .750 1-1/2 1.000 .875 1-3/4 1.0001.000 2 1.2501.125 2-1/4 1.4061.406 2-1/2 1.5001.562
P-1930-BG
04/10
A
B
C
T
F
G
Avg. Ultimate Strgth. (Lbs.)
1.11 1.41 1.67 2.07 2.20 2.60 2.95 3.63
.65 .80 .98 1.21 1.28 1.52 1.75 2.02
.55 .70 .83 1.03 1.10 1.30 1.48 1.66
.125 .156 .187 .218 .250 .281 .312 .375
.680 .930 1.156 1.375 1.625 1.875 2.130 2.312
.234 .312 .375 .437 .500 .562 .687 .781
8,500 14,500 24,000 34,000 46,000 58,000 80,000 95,000
Avg. Wgt. Per Foot Lbs. 1.14 1.93 3.06 4.45 5.68 7.33 9.10 13.50
Boston Gear 800-825-6544
245
G
Engineering Information Conveyor Chain Selection
Single or Double Pitch, Flat-Top and Hollow Pin Chain In order to select a chain for a conveyor application, the Velocity and maximum Chain Pull must be established. The total pull may be obtained if the Torque and Sprocket PD are known, or if the Horsepower and Velocity can be determined. Chain Pull, W = 2T D W = 33000 P V
G
W = 126050 P nD
{
W = Chain Pull, Lbs. T = Torque, In. Lbs. D = Sprocket PD, Inches P = Horsepower V = Chain Velocity, FPM n = Sprocket Speed, RPM
If a pair of chains are used, the pull on each chain will be half of the total chain pull. Having determine the Chain Pull, refer to Chain Load Rating Charts on Page 247 and select a chain with a capacity equal to or greater than the Chain Pull Required. To Calculate Chain Length (L): For Single Pitch Chain L = 2C + N For Double Pitch & Flat-Top Chain L = 2C + N — 2 where: L = Chain Length, Pitches C = Center Distance, Pitches N = Number of Teeth in One Sprocket* The computed value of L must be rounded out to a larger whole number of pitches (links) for each complete chain. Any whole number of links is satisfactory for Hinge-Top Chain but an even number should be selected for Single or Double Pitch or Flat-Top Chains. To obtain the center distance or chain length in inches, the value in pitches should be multiplied by the chain pitch. Example 1. Selecting a Double Pitch Conveying Chain. The power required to move material at 50 FPM is 1 Horsepower on a Conveyor with a Center Distance of 10 ft. Step I: Determine Chain Pull: W = 33,000 P = 33000 x 1 = 660 Lbs. V 50
Step II: Refer to Conveyor Chain Load Rating Chart, page 165. Select a double pitch chain with a Working Load equal to or greater than 660 lbs. at 50 FPM. Selection — C2050 (1.25” Pitch) with 5/8 pitch sprockets 50B25 (or larger).
246
Boston Gear 800-825-6544
Step III: Determine Chain Length in Pitches. Convert Center Distance (10 feet) to pitches. C = 10 x 12 = 96 Pitches 1.25 Chain Length (L) = 2C + N 2 Chain Length (L) = 2 x 96 + 25 = 204.5 2 Adjust to next larger even whole number. Chain Length (L) = 206 Pitches *Assuming same size Driver and Driven Sprockets.
Single Pitch & Double Pitch Chain For horizontal conveyor applications where the HP or Torque data is not available, the approximate Chain Pull can be calculated from the Weight to be moved (product and cha in) and the Coefficient of Friction (between sliding surfaces of chain and supporting ways). For Normal operation: Chain Pull W = (M = 2m) Cf W = Chain Pull Lbs. M = Product Weight, Lbs. per Ft. m = Chain Weight, Lbs. per Ft. C = Conveyor Length (between Centers), Ft. f = Coefficient of Friction (see Table). For trial purposes, let m = 1.0 for other conveyor chains.
Note: The estimated weight of pins and/or attachments (per foot of chain) should be included in chain weight. Whenever the product becomes stalled on a moving conveyor, the chain pull is increased. The Added Pull depends on the Stalled Weight (of product) and the Coefficient of Friction (between surfaces of product and chain). For stalled product: Added Chain Pull, w = Mlf w = Added Chain Pull, Lbs. M = Product Weight, Lbs. per Ft. l = Length of Stalled Product, Ft. f = Coefficient of Friction (see Table). For Stalled condition: Total Chain Pull = W = w, Lbs. If a pair is used, the pull on each chain will be half of the total chain pull.
P-1930-BG
04/10
Engineering Information Conveyor Chain Selection (Continued)
Example 2. A horizontal conveyor 25 Ft. long is to move a product weighing 200 Lbs. per Ft. at 20 FPM. Two FT2060 Flat-Top chains will be used, if possible, with the thermoplastic plates supported on metal ways without lubrication. Chain Pull, W = (M + 2m) Cf M = 200 Lbs. per Ft. m = 1.41 x 2 = 2.82 (two chains) C = 25 Ft. f = .25 + .15 = .40 (for starting with load) W = (200 + 5.64) 25 x .40 = 2056 Lbs. The maximum working load of FT2060 chain at 20 FPM is 1170 Lbs. (see table) and this will be adequate if the product cannot become stalled. Note: Whenever two strands of chain are used, the total chain weight will be double the single strand weight, (per foot).
COEFFICIENT OF FRICTION FOR CONVEYOR CHAIN Plate Material Stainless Steel
High ImpregStainless Carbon Density Delrin Nylon nated Steel Steel PolyWood ethylene
Dry Water Soap & Water Carbon Steel Dry Water Soap Acetal Plastic Dry Water Soap & Water Nylon Dry Water Soap & Water
.41 .35 .20
.41 .35 .20
.30 .25 .25
.35 .30 .20
.15 .12 .08
.11 .11 .11
.41 .35 .20
.39 .35 .20
.30 .25 .15
.35 30 .20
.15 .12 .08
.11 .11 .11
.30 .25 .15
.30 .25 .15
.20 .20 .10
.35 .30 .20
.35 .30 .20
.25 .25 .12
CHAIN LOAD RATING CHART Chain Numbers Single Pitch Double Pitch Velocity of Chain (FPM) 25 50 75 100 125 150 175 200 225 250 275 300
Pitch
35*
40
50
60
80
100
120
160
C2040 C2050 C2060 C2080 C2100 C2120 C2160 Maximum Working Load or Chain Pull (Lbs.) 250 443 690 995 1770 2760 3990 243 432 675 970 1730 2690 3880 233 414 645 930 1660 2580 3720 220 391 610 880 1570 2440 3520 206 366 570 820 1460 2280 3290 190 338 528 760 1350 2110 3040 175 311 485 700 1240 1940 2800 160 284 444 640 1140 1770 2560 146 259 405 584 1040 1620 2340 133 236 368 530 940 1470 2120 120 214 333 480 855 1330 1920 110 195 305 440 780 1220 1760 Standard Pitch Boston Sprockets To Operate With Above Chain 3/8”
1/2”
5/8”
3/4”
1”
7100 6900 6630 6250 5850 5400 4970 4550 4150 3770 3310 3120
1-1/4” 1-1/2”
2”
*No. 35 Chain is a Rollerless Chain. †For Hollow Pin chains, the working load (chain pull) should be multiplied by 1.3 to obtain the proper value for use in selecting the chain pitch required.
Flat Top Conveyor Chain MAXIMUM WORKING LOAD OR CHAIN PULL (LBS.) Chain Type
0-10
Chain Velocity — Feet Per Minute 20 30 40 50
FT2060
1070
1045
1035
1030
1025
70 1015
MAXIMUM WORKING LOAD OR CHAIN PULL (LBS.)
SINGLE PITCH ROLLER CHAIN WITH ATTACHMENTS
DOUBLE PITCH ROLLER CHAIN WITH ATTACHMENTS
To select the proper chain, the working load or chain pull and the chain speed in feet per minute must be known. Using this information find the proper chain in the chart.† These load ratings are based on proper installation, lubrication and steady load conditions. The minimum permissible number of sprocket teeth is 15 for single pitch, and 24 for double pitch chain. For smoother operation, sprockets with greater numbers of teeth than the minimum are recommended.
P-1930-BG
04/10
Chain Type
100
FT2060
1005
Chain Velocity — Feet Per Minute 150 200 250 300 960
915
855
670
400 435
LUBRICATION - To assure maximum chain life, carbon and stainless steel chains should be lubricated wherever possible. Soap lubrication is recommended. Several detergent and nonalkali fluid types are on the market. Water lubrication should be used when no other lubricant can be tolerated. Drip-type systems and wheel-type and sponge-type applicators are on the market. Delrin chain tends to be self-lubricating, although wear life can be extended with the use of a lubricant, such as soap and water.
Boston Gear 800-825-6544
247
G
Engineering Information Conveyor Chain Working Load At speeds of normal conveyor operation (less than 500 feet per minute), chains are selected on the basis of safe working load, rather than horsepower capacity. Working load or chain pull of conveyor series chains is calculated by multiplying the total combined weight of the chain, plus the conveyed material in any run, by the appropriate coefficient of friction. In general, the maximum working load for a conveyor chain will be higher than that determined for similar chains from a horsepower rating table. The higher load is permitted because there are usually fewer load cycles on a conveyor chain, compared to a power transmission drive. In order to minimize wear, permissible working loads of conveyor chains are reduced as speeds increase. See the working load table below.
G
COEFFICIENT OF FRICTION—DOUBLE PITCH ROLLER CHAINS
Chain Number C-2040, C-2050, C-2060H, C-2080H, C-2100H, C-2120H, C-2160H,
C-2042 C-2052 C-2062H C-2082H C-2102H C-2122H C-2162H
Chain with Large Size Chain with Standard Size Rollers and Rolling Rollers and Sliding Friction Friction *Static Rolling *Static Sliding Dry Lubricated Dry Lubricated Dry Lubricated Dry Lubricated 0.17 0.12 0.14 0.10 0.16 0.11 0.13 0.09 0.16 0.11 0.13 0.09 0.15 0.10 0.12 0.08 .33 .24 .27 .21 0.14 0.09 0.11 0.07 0.14 0.09 0.11 0.07 0.13 0.08 0.10 0.07
Horizontal Conveyor P=
LF (2W + M) N
L
Inclined Conveyor A factor must be added to or subtracted from the chain load to compensate for raising or lowering the conveyed load on an inclined installation. This factor may be calculated by multiplying the weight of conveyed load by the vertical change in feet, and dividing y the horizontal run of the conveyor in feet. P=
LF (2W + M) cos φ ÷ LM sin φ N
φ = ARC tan
V L1
L V L1
*For chain speed of 3 feet per minute or less
RECOMMENDED MAXIMUM WORKING LOADS Chain Number C-2040, C-2042 C-2050, C-2052 C-2060H,C-2062H C-2080H,C-2082H C-2100H,C-2102H C-2120H,C-2122H C-2160H,C-2162H
Pitch in Inches
5
25
1 1 1/4 1 1/2 2 2 1/2 3 4
530 870 1215 2070 3425 4855 8585
525 865 1205 2055 3400 4815 8210
Chain Speed, feet per minute 50 75 100 200 300 Maximum Working Load, Lbs. 510 840 1170 2000 3310 4690 8000
490 805 1125 1915 3175 4495 7670
465 765 1065 1815 3000 4250 7250
335 555 775 1320 2180 3090 5275
230 380 530 905 1500 2125 3625
400
500
160 265 370 630 1040 1480 2520
115 190 265 455 750 1065 1815
Calculate the working load for horizontal, inclined, vertical and carousel conveyors, substituting the following values in the appropriate formulas: P = Chain pull or working load S = Speed in feet per minute L = Length of conveyor in feet between sprocket centers T = Total chain length in feet V = Vertical rise in feet F1 = Coefficient of friction, sliding F2 = Coefficient of friction, rolling W = Weight of chain and attachments per foot in pounds M = Weight of conveyed product per foot in pounds N = Number of chain strands
248
Boston Gear 800-825-6544
Vertical Conveyor
P=
L (M + W) N
L
Carousel Conveyor (Plan View) for Crescent Top Chains
P=
TF (W + M) + (TMF) N
Note: (TMF) is the length of stalled product.
P-1930-BG
04/10
Engineering Information Roller Chain Formulas Horsepower
Sprocket Speed
Horsepower equals 33,000 foot-pounds per minute, or 550 foot-pounds per second. In terms of chain working load or pull (P) and speed:
RPM =
12 x RPM Number of Teeth x Pitch
HP =
PxS 33,000
RPM of Driven Sprocket =
Driver Teeth x Driver RPM Driven Teeth
HP =
P x Number of Teeth x Pitch x RPM 396,000
RPM of Driver Sprocket =
Driven Teeth x Driven RPM Driver Teeth
HP =
Torque (lb.-in.) x RPM 63,025
Centrifugal Pull or Tension
G
Pull or tension caused by chain weight and velocity:
Torque (lb.-in.) x RPM 5,252
HP =
Chain Weight per Foot x (FPM)2 115,900
Centrifugal Pull =
Ratio Ratio =
Teeth in Large Sprocket Teeth in Small Sprocket
or
Fast RPM Slow RPM
Total Chain Tension Total Chain Tension = Working Load + Centrifugal Pull
Chain Bearing Pressure Chain Working Load
Bearing Pressure (pounds per square inch) =
When horsepower input is known, calculate for chain working load or pull (P): P=
HP x 33,000 FPM
Working Load Bushing Length x Pin Dia.
Torque Torque =Sprocket Pitch Radius x Working Load
P=
HP x 396,000 Number of Teeth x Pitch x RPM
Torque (lb.-in.) =
HP x 63,025 RPM
P=
Torque Sprocket Pitch Radius
Torque (lb.-ft.) =
HP x 5,252 RPM
Chain Speed
Factory of Safety
Pitch x Number of Teeth x RPM Speed (FPM) = 12
FS=
P-1930-BG
04/10
Chain Ultimate Strength Chain Working Load
Boston Gear 800-825-6544
249
Notes
G
250
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Attachments Ordering Procedure
Double Pitch Roller Chains
Attachments may be ordered as separate links or assembled in chains. WHEN ORDERING SEPARATE ATTACHMENT LINKS, THE FOLLOWING DATA MUST BE GIVEN: 1. Chain Number and Attachment Number. 2. Connecting Link or Roller Link. WHEN ORDER ATTACHMENTS ASSEMBLED* IN CHAIN, THE FOLLOWING INFORMATION MUST BE SUPPLIED:
Double Pitch Chain Attachments
1. Chain Number and Attachment Number. 2. Spacing between Attachment Centers (Pitches or Inches). This must be a multiple of the chain pitch. 3. If spacing is an even number of pitches, attachments will be assembled as pin links unless roller link style is specified. 4. If spacing is an odd number of pitches, assembly will normally be supplied with alternate pin and roller link attachments. For attachments to be on pin (or roller) links only, an offset link must be assembled in each interval.
G
*Riveted assembly will be supplied unless detachable links are specified.
ANSI Standard Roller Chains
Standard Roller Chain Attachments
P-1930-BG
04/10
Boston Gear 800-825-6544
251
Roller Chains Hollow Pin Single and Double Pitch Boston Gear Hollow Pin Chain is identical to ANSI Roller Chain in pitch, roller width and roller diameter. It is quality designed for long wear life in conveyor applications. The “hollow pin” feature provides unlimited conveyor design versatility. Stud, bushed design. Bushing diameter is same as comparable roller chain.
ORDER BY CATALOG NUMBER OR ITEM CODE
Chain Pitch Standard Catalog and Package Number Number Quantities SINGLE PITCH 1/2" – 40HP 40HP – 20' 5/8" – 50HP 50 HP – 20' 20' Pkg. 3/4" – 60 HP 60 HP – 20" 1" – 80 HP 80 HP – 20' DOUBLE PITCH — STANDARD ROLLERS 1" – C2040HP C2040HP – 20' 1-1/4" – C2050HP C2050 HP – 20' 20' Pkg. 1-1/2" – C2060 HP C2060 HP – 20" 2" – C2080 HP C2080 HP – 20' DOUBLE PITCH — OVERSIZE ROLLERS 1" – C2042HP C2042HP – 20' 1-1/4" – C2052HP C2052 HP – 20' 20' Pkg. 1-1/2" – C2062 HP C2062 HP – 20" 2" – C2082 HP C2082 HP – 20'
G
Item Code 31088 31092 31096 31100 31104 31108 31112 31116 31104 31108 31112 31116
C C
H
A
E
H
T
A
E
B
B
T
G
G F
F
PITCH
PITCH
DIMENSIONS IN INCHES
Chain Pitch Single 1/2 5/8 3/4 1
252
Double 1 1-1/4 1-1/2 2
E
H
A
B
C
T
F
G
.312 .375 .500 .625
.312 .400 .469 .625
.65 .79 .97 1.22
.37 .46 .57 .70
.32 .40 .49 .61
.060 .080 .094 .125
.46 .59 .69 .88
.158 .203 .237 .318
Boston Gear 800-825-6544
Average Ultimate Strength (Lbs.) 2500 3700 6100 8500
Average Weight Per Foot (Lbs.) Single Double .38 .31 .63 .51 .88 .75 1.56 1.33
P-1930-BG
04/10
Block Chain Block Chain* ORDER BY CATALOG NUMBER OR ITEM CODE
Chain Number B503 B504 B505 B506
Standard Package Quantities
Catalog Number B503-25’ B504-25’ B505-25’ B506-25’
25’ Pkg.
Item Code 30602 30608 30614 30620
STAINLESS STEEL Block Chain available on Special Order. Contact Factory.
ALL DIMENSIONS IN INCHES
Chain No. B503 B504 B505 B506
From From Pin Head Pin Head Pitch W to to C/L C/L A B 1 1/4 7/32 17/64 1 5/16 9/32 5/16 1 3/8 5/16 11/32 1 1/2 3/8 13/32
Over-All Width C Riv. 7/16 9/16 5/8 3/4
Sp Cl 31/64 19/32 21/32 25/32
Link Plate Thickness T 0.060 0.080 0.080 0.080
Pin Dia. E
Average Weight Per Foot, (Lbs.)
0.170 0.187 0.187 0.187
0.3 0.4 0.4 0.5
G
*Refer to Page 290 for Block Chain Sprockets
Leaf (Cable) Chain Boston Leaf Chains are designed for tension linkage applications such as counterweight chains for machine tools, elevator and oven doors, fork lift truck masts, spinning frames, i.e. applications to lift or pull where it is not necessary to engage a sprocket. Leaf chains normally run over sheaves and are attached to clevises at each end. Because of the wide variation in clevis designs, leaf chains are furnished less the end pins. Not recommended for new applications. ORDER BY CHAIN NUMBER AND LENGTH IN FEET
Chain Pitch
Lacing
A
G
H
T
1/2 1/2 1/2 5/8 5/8 5/8 3/4 3/4 3/4 1 1 1 1-1/4 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2 1-3/4 1-3/4 1-3/4 2 2 2
2x3 3x4 4x6 2x3 3x4 3x4 2x3 3x4 4x6 2x3 3x4 4x6 2x3 3x4 4x6 2x3 3x4 4x6 2x3 3x4 4x6 2x3 3x4 4x6
.50 .67 .92 .58 .78 1.07 .76 1.02 1.41 .94 1.26 1.41 1.12 1.60 2.08 1.27 1.73 2.42 1.46 1.98 2.76 1.68 2.22 4.17
.200 .200 .200 .234 .234 .234 .312 .312 .312 .375 .375 .375 .437 .437 .437 .500 .500 .500 .562 .562 .562 .687 .687 .687
.455 .455 .455 .585 .585 .585 .708 .708 .708 .950 .950 .950 1.160 1.160 1.160 1.380 1.380 1.380 1.620 1.620 1.620 1.830 1.830 1.830
.080 .080 .080 .094 .094 .094 .125 .125 .125 .156 .156 .156 .187 .187 .187 .220 .220 .220 .250 .250 .250 .281 .281 .281
P-1930-BG
04/10
Average Weight Chain Ultimate Per Foot Number Strength (Lbs.) (Lbs.) 6,000 .48 BL-423 9,000 .64 BL-434 12,000 .93 BL-446 9,000 .74 BL-523 13,200 1.03 BL-534 18,000 1.46 BL-546 13,200 1.15 BL-623 20,400 1.60 BL-634 26,400 2.30 BL-646 22,800 1.91 BL-823 34,800 2.66 BL-834 45,600 3.78 BL-846 31,200 2.95 BL-1023 49,200 4.07 BL-1034 62,400 5.79 BL-1046 40,800 4.15 BL-1223 66,000 5.82 BL-1234 81,600 8.27 BL-1246 51,600 5.57 BL-1423 85,200 7.73 BL-1434 103,200 11.01 BL-1446 78,000 7.51 BL-1623 118,800 10.45 BL-1634 156,000 14.85 BL-1646
When ordering chain with odd number of pitches specify whether male or female end link required.
Boston Gear 800-825-6544
253
Ladder Chain Steel–Stainless Steel–Brass
An effective, low-cost means of transmitting motion where load (torque) is not a critical factor. In addition to stock-listed sizes and materials, ladder chain can be furnished pre-assembled into endless lengths to customer specifications or pre-cut to desired lengths. Ladder chain may be made into endless loops by opening the two eyes of one end link with needle-nosed pliers to permit entry of the other end link and then closing the open eyes. Ladder chain can be furnished on a made-to-order basis made endless, with special plating. Consult the factory for prices.
ORDER BY CATALOG NUMBER OR ITEM CODE*
G
B
Chain Number 1AA Miniature
Standard package Quantities
1
50' Pkg.
1A
50' Pkg.
2
50' Pkg.
2-1/2
50' Pkg.
*
D
Catalog Number
Item Code
1AA Stainless Steel
54941
1 BRASS—50' 1 HITEN—50' 1 STEEL—50' 1 SS—50' 1A BRASS—50' 1A HITEN—50' 1A STEEL—50' 1A SS—50' 2 BRASS—50' 2 HITEN—50' 2 STEEL—50' 2 SS—50' 2A BRASS—50' 2A HITEN—50' 2A STEEL—50' 2A SS—50'
31200 31208 31216 46847 31202 31210 31218 46848 31204 31212 31220 46849 31206 31214 31222 46850
*To order Miniature Ladder Chain, specify Item Code and Number of Feet required. For Sprockets to run with this Chain, see Miniature Roller Chain Sprockets, Page 266.
ALL DIMENSIONS IN INCHES
A Links Chain per Foot Number (Approx.)
C
E
1AA 1A 1 2 2-1/2
82 65 42 34 34
A Min.
Max.
.1465 .1840 .2846 .3514 .3507
.1485 .1852 .2869 .3546 .3553
B C D E Min. Max. Max. ±.0005 .079 .115 .125 .180 .195
.229 .315 .350 .480 .565
— .072 .091 .115 .155
.031 .041 .047 .054 .080
Weight Per 100 Ft. (Lbs.) Steel
Brass
— 2.85 3.38 4.20 10.30
— 3.06 3.04 4.50 11.10
Load Data Approx. Yield Point Approx. HP at 500 RPM (In Pounds) Chain Steel Steel Number High Stain- Brass High Stain- Brass Untreated Tensile less Untreated Tensile less 1A 20 40 20 15 1/6 1/3 1/6 1/8 1 40 70 25 25 1/4 1/2 3/16 1/6 2 50 90 35 30 1/3 3/4 1/4 1/4 2-1/2 75 140 65 45 1/2 1 7/16 1/3 Ratings for 1AA Chain will be furnished on request.
254
Boston Gear 800-825-6544
P-1930-BG
04/10
Miniature Roller Chains Stainless Steel – Single Strand Riveted
MATERIAL: Stainless Steel Type 18-8 FINISH: Clear Passivated AVERAGE TENSILE LOAD: 180 lbs. WEIGHT: .035 lbs. per foot
G
ORDER BY CATALOG NUMBER OR ITEM CODE
Item Number 54919 54920 54921 54922 54923 54924 54925 54926 54927 54928 54929 54930 54931 54932 54933 54934 54935 54936 54937 54938
Catalog Number 15SS50 15SS60 15SS70 15SS80 15SS90 15SS100 15SS110 15SS120 15SS130 15SS140 15SS150 15SS160 15SS170 15SS180 15SS190 15SS200 15SS210 15SS220 15SS230 15SS240
No. of Links 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240
Length 7.375 8.850 10.325 11.800 13.275 14.750 16.225 17.700 19.175 20.650 22.125 23.600 25.075 26.550 28.035 29.500 30.975 32.450 33.925 35.400
NOTE: Sizes not listed are available on request. All lengths include and are supplied with connecting link 15SS C/L
PRICED PER FOOT
Item Catalog Number Number 54939
Material
6M-7-MS Nylatron GS
CONNECTING LINK Catalog Number Item Code 54942
P-1930-BG
04/10
15SS C/L
P Pitch
Links per Foot
Weight per Foot
.1475
81.3
.093 oz.
BUSHING LINK Catalog Number Item Code 54943
15SS B/L
Boston Gear 800-825-6544
255
Chain Pullers The Boston Chain Puller was designed to make roller chain installation quick and easy. To use: (1) hook the two jaws into each end of the chain; (2) turn the screw until the two ends almost meet; (3) insert the connecting link and fasten.
ORDER BY CATALOG NUMBER OR ITEM CODE
Chain Sizes Nos. 35-60 80-240
Jaw Spread 2" 5"
Catalog Number TH35-60 TH80-240
Item Code 10784 10788
G Chain Breaking Tools These Boston Chain Breaking Tools will disconnect any riveted roller chain manufactured to ANSI specifications, up to and including No. 100 (1-1/4” pitch). Tool steel replaceable punch point, tempered for long life.
ORDER BY CATALOG NUMBER OR ITEM CODE
Chain Sizes Nos. 25-60 60-100
256
Boston Gear 800-825-6544
Catalog Number CBT-60 CBT-100
Item Replaceable Points Code Catalog Number Item Code 06800 XCBT 60-5 06808 63526 XCBT 100-5 63587
P-1930-BG
04/10
Sprockets
H
Section Contents ROLLER CHAIN DRIVES General Description ..................................................................................................................258-259 Horsepower Ratings Charts.....................................................................................................260-262 Selection Charts ........................................................................................................................263-265 MINIATURE CHAIN SPROCKETS Catalog Number Selections/Dimensions .......................................................................................266 ROLLER CHAIN SPROCKETS Catalog Number Selections/Dimensions................................................................................267-289 BLOCK CHAIN SPROCKETS Catalog Number Selections/Dimensions .......................................................................................290 LADDER CHAIN SPROCKETS Catalog Number Selections/Dimensions................................................................................291-292 ROLLER CHAIN DRIVE TENSIONERS Catalog Number Selections/Dimensions................................................................................293-296 IDLER SPROCKETS Catalog Number Selections/Dimensions .......................................................................................293
P-1930-BG
04/10
Boston Gear 800-825-6544
257
Chain Drives Roller Chain Sprockets
Boston roller chain sprockets are quality designed and built to ANSI specifications for superior fatigue resistance and long operational life in a host of industrial and process applications. Sprockets are available in a wide range of materials and pitches, with or without hubs.
Types and Styles Type A – No Hub Boston standard Type A sprockets are stocked for all single strand Roller Chains up to 1" Pitch (#80 Chain).
Type B – Single Hub Boston Steel—Type B Stock Bore sprockets are stocked for all single strand Roller Chains up to 1" Pitch (#80 Chain) and for double strand Roller Chains in 3/8, 1/2, 5/8 and 3/4" Pitches.
H
Boston Stainless Steel—Type B Stock Bore sprockets are stocked for single strand Roller Chain in 1/4, 3/8, and 1/2" pitches. Boston Steel—Type B Bored-to-Size sprockets are stocked for single strand Roller Chain in 1/4, 3/8, 1/2, 5/8, 3/4, and 1" pitches.
Boston Type B sprockets are solid (one piece) construction in small sizes, and two-piece design in larger numbers of teeth, see Chart.
Pitch Size 25 35 41 40 50 60 80
Solid up to 25B30 35B25 41B20 40B20 50B16 60B16 80B14
Two-Piece starting at 25B32 35B26 41B21 40B21 50B17 60B17 80B15
Roller Chain Drive Selection The following considerations are very important in the selection and application of roller chain drives: HORSEPOWER RATINGS—This catalog lists Horsepower Ratings for ANSI Series, single pitch, single strand chains No. 25 through No.160 (and lightweight machinery series No. 41). Ratings are listed for various numbers of teeth and speeds of smaller sprocket. Ratings for intermediate numbers of teeth or RPM may be determined by interpolation. The ratings reflect a service factor of 1, a chain length of approximately 100 pitches, the use of recommended lubrication methods and a drive arrangement where two aligned sprockets are mounted on parallel horizontal shafts. For maximum service life, sprockets with small numbers of teeth, operating at moderate to high speeds or near the rated horsepower should have hardened teeth. Approximately 15,000 hours of service life at full load operation may be expected under these conditions.
258
Boston Gear 800-825-6544
NO. OF TEETH—It is good practice to select a pinion sprocket with no less than 17 Teeth, to assure 120° of chain wrap and minimize overhung load. However, certain conditions, i.e., space limitations, light loads, intermittent duty, etc. will permit the use of smaller pinions. RATIO—Sprocket ratios should not exceed about 6 to 1 for normal chain life. HARDENED TEETH—Boston Gear steel sprockets can be hardened. Consult the factory for recommended procedure. CENTER DISTANCE—The correct center distance is very important. In designing chain drives, it is important that the Center Distance should be long enough to provide at least 120° of chain wrap on the smaller sprocket. RELATIVE SHAFT LOCATIONS—It is desirable that the line between the two shaft centers be as nearly horizontal as possible. If this line is more than 60° from the horizontal, special precautions should be taken.
P-1930-BG
04/10
Chain Drives Roller Chain Drive Selection (Continued) A roller chain consists essentially of numerous small bearings operating under high pressures and requires adequate lubrication. There are four basic types of lubrication suggested for chain drives, depending upon the chain speed and the power transmitted. The Horsepower Rating Tables indicate the type of lubrication recommended.
Type I—Manual Lubrication Manual lubrication is accomplished by applying oil with a brush or spout can to the inside of the chain at the edges of the side plates. Volume and frequency should be determined by periodic inspection.
TYPE II—Drip Lubrication Oil is directed between link plate edges to a drip lubricator. Only enough oil to keep the chain moist is necessary and a light metal splash guard will keep the floor and surroundings clean.
TYPE III—Bath or Disc Lubrication With bath lubrication, the lower strand of the chain runs through a sump of oil. The oil level should reach the pitch line of the chain at its lowest point while operating. With disc lubrication, the chain operates above the oil level. The disc picks up oil from the sump and deposits it on the chain, usually by means of a trough. The disc diameter should be such as to produce rim speeds from 600 minimum to 8000 maximum FPM. This type of lubrication requires that the drive be enclosed in an oil tight chain case.
TYPE IV—Oil Stream Lubrication The lubricant is usually supplied by a circulating pump capable of supplying the chain drive with a continuous stream of oil. The oil should be applied inside the chain loop evenly across the chain width, and directed at the lower strand. This type of lubrication requires that the drive be enclosed in an oil tight chain case. Recommended lubricant viscosities for various ambient temperatures are listed in the following table: Temp. Degrees F. 20-40 40-100
Temp. Degrees F. 100-120 120-140
Lubricant SAE20 SAE30
Lubricant
SURROUNDING CONDITIONS—Abrasive, corrosive, or high temperature conditions can shorten chain life. If adverse conditions exist, special precautions should be taken. It may be advisable to use a drive with higher capacity than normal, stainless steel chain, etc. Roller chain drives may be selected with the following procedure: a. From Table #1 of the Application Classification Chart on Pages 323-324 determine the Service Factor. b. Multiply the Application HP by the Service Factor to obtain a Design HP.* c. The Selection Table below may be used to select an appropriate chain size using a sprocket of 17 teeth or larger. d. From the appropriate horsepower rating table (pages 260262 determine the minimum size sprocket needed to provide, at the required speed, a rating equal to (or greater than) the Design horsepower. e. The Tables on pages 263-265 may then be used to select number of sprocket teeth, shaft center distance and chain length of a drive suitable for the application. *For Stainless Steel Chains, operating under wet or dry conditions, the Design Horsepower must be multiplied by a Factor (see Table below) for selection purposes. NOTE: Standard Steel Chains are not recommended for wet or dry applications. Application Conditions Wet (Moisture) Dry (Unlubricated)
Factor 2.0 5.0
Horsepower ratings of Multiple Strand chain may be obtained by multiplying the Single Strand rating by the proper Factor from the following table: MULTIPLE STRAND RATING FACTORS
SAE-40 SAE50
Number of Strands Rating Factor
Double 1.7
Triple 2.5
Quadruple 3.3
*These Horsepower Ratings are based on certain operating conditions, see Page 258.
SELECTION TABLE RPM Smaller Sprocket 1800 1500 1200 1000 800 700 600 500 400 350 300 250 200 175 150 125 100 80 70 60 50 40 30 25 20 15 10 P-1930-BG
1/2
1
1-1/2
DESIGN HORSEPOWER 4 5 7-1/2
2
3
35 35 35 35 40 40 40 40 40 40 50 50 50 50 60 60 60 80 80 80 80 80 100 100 100 120 120
35 35 40 40 40 40 40 50 50 50 50 50 60 60 60 80 80 80 80 80 80 100 100 120 120 120 140
10
15
20
25
30
50 60 60 60 60 60 60 80 80 80 80 80 80 100 100 100 100 120 120 120 140 140 160 160
80 60 60 60 60 80 80 80 80 80 100 100 100 100 120 120 120 140 140 140 160 160
60–2 80 60 80 80 80 80 80 100 100 100 100 120 120 120 120 140 140 160 160 160
80–2 60–2 80 80 80 80 80 100 100 100 100 120 120 120 120 140 140 160 160
— 80–2 100 80 80 80 100 100 100 100 120 120 120 140 140 140 160 160
CHAIN NUMBER
25 25 25 25 25 25 35 35 35 35 35 35 35 40 40 40 40 40 50 50 50 50 60 60 60 80 80 04/10
25 25 35 35 35 35 35 35 35 40 40 40 40 40 50 50 50 50 60 60 60 60 80 80 80 100 100
35 35 35 35 35 35 35 40 40 40 40 40 50 50 50 50 60 60 60 80 80 80 80 80 100 100 120
40 40 40 40 40 50 50 50 50 50 60 60 60 80 80 80 80 80 80 100 100 100 120 120 120 140 140
40 40 40 40 50 50 50 50 60 60 60 60 80 80 80 80 80 100 100 100 100 120 120 140 140 160
40 40 50 50 50 50 60 60 60 80 80 80 80 80 80 100 100 100 120 120 120 120 140 140 160
Boston Gear 800-825-6544
259
H
Roller Chain Drives Horsepower Ratings for ANSI Roller Chains See Horsepower Ratings, page 259 Small Sprocket RPM 10 Teeth P.D. 12 .97" .007 15 1.20 .009 17 1.36 .011 19 1.52 .012 20 1.60 .013 Lubrication #
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 25-1/4” PITCH 20
30
50
75
.014 .018 .020 .023 .024
.020 .025 .029 .033 .035
.032 .040 .046 .052 .055
.046 .058 .066 .075 .079
Small Sprocket RPM 10 Teeth P.D. 11 1.33” .023 13 1.57 .027 15 1.80 .032 17 2.04 .037 19 2.28 .042 21 2.52 .046 23 2.75 .051 25 2.99 .055 Lubrication #
H
Small Sprocket RPM 10 Teeth P.D. 11 1.77” .030 13 2.09 .036 15 2.40 .042 17 2.72 .048 19 3.04 .054 21 3.35 .060 23 3.67 .066 25 3.99 .072 Lubrication # Small Sprocket RPM 10 Teeth P.D. 11 1.77” .030 13 2.09 .036 15 2.41 .042 16 2.56 .045 18 2.88 .051 20 3.20 .057 22 3.51 .063 24 3.83 .069 Lubrication #
100 125 150 200 250 300 400 600 900 1200 1800 2500 3000 3500 4000 .059 .075 .086 .097 .103
.072 .092 .105 .119 .125
.085 .108 .124 .140 .148 Type I
.11 .14 .16 .18 .19
.24 .17 .20 .22 .23
.16 .20 .23 .26 .28
.21 .26 .30 .34 .36
.29 .38 .43 .49 .52
0.43 0.54 0.62 0.70 0.74
0.55 0.70 0.18 0.91 0.96
0.80 1.01 1.16 1.31 1.38
1.07 1.26 1.36 1.61 1.56 1.84 1.76 2.07 1.86 2.19 Type II
1.45 1.85 2.11 2.38 2.52
1.62 2.08 2.38 2.69 2.84
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 35-3/8” PITCH 20
30
50
75
100 125 150 200 250 300 400 600 900 1200 1500 1800 2500 3000
.043 .051 .060 .068 .077 .086 .095 .104
.062 .074 .086 .099 .111 .124 .137 .150
.098 .117 .136 .156 .176 .196 .217 .237
.14 .17 .20 .22 .25 .28 .31 .34
.18 .22 .26 .29 .33 .37 .41 .44
.22 .27 .31 .36 .40 .45 .49 .54 Type I
.26 .31 .37 .42 .47 .53 .58 .64
.34 .42 .41 .50 .47 .58 .54 .66 .61 .75 .68 .83 .75 .92 .82 1.01
.49 .59 .68 .78 .88 .98 1.09 1.19
.63 .76 .89 1.02 1.15 1.27 1.41 1.54
.91 1.09 1.28 1.46 1.65 1.84 2.03 2.22
1.32 1.72 1.59 2.05 1.85 2.40 2.12 2.75 2.39 3.10 2.66 3.45 2.94 3.81 3.21 4.16 Type II
2.08 2.49 2.91 3.33 3.76 4.19 4.62 5.06
2.47 2.96 3.45 3.95 4.46 4.97 5.48 6.00
3.32 2.93 3.98 3.76 4.64 4.66 5.31 5.63 5.99 6.65 6.68 7.73 7.37 8.68 8.06 9.50 Type III
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 41-1/2” PITCH 20
30
50
75
100
125
150
200
400
600
900 1200 1800 2400 3000
.056 .067 .078 .089 .100 .112 .124 .135
.080 .096 .112 .128 .145 .161 .178 .195
.13 .15 .18 .20 .23 .26 .28 .31
.18 .24 .22 .28 .26 .33 .29 .38 .33 .43 .37 .48 .41 .53 .44 .58 Type I
.29 .35 .40 .46 .52 .58 .64 .70
.34 .41 .48 .55 .62 .69 .76 .83
.44 .54 .64 .82 .53 .65 .76 .99 .62 .75 .89 1.15 .71 .86 1.02 1.32 .80 .97 1.15 1.49 .89 1.09 1.28 1.66 .98 1.20 1.41 1.83 1.07 1.31 1.55 2.00 Type II
250
300
1.19 1.42 1.66 1.90 2.14 2.39 2.64 2.88
1.71 1.71 2.05 2.20 2.39 2.73 2.74 3.29 3.09 3.89 3.44 4.46 3.79 4.92 4.15 5.38 Type III
.093 1.20 1.49 1.79 2.12 2.46 2.82 3.20
.060 0.78 0.96 1.16 1.38 1.60 1.83 2.08 Type IV
.043 0.56 0.69 0.83 0.98 1.14 1.31 1.49
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 43-1/2” PITCH 20
30
40
50
75
100
125
150
175
200
250
300
350
.056 .067 .078 .084 .095 .106 .118 .130
.080 .096 .112 .120 .137 .153 .170 .187
.11 .13 .15 .16 .18 .20 .23 .25
.13 .15 .18 .19 .22 .25 .27 .30
.18 .24 .22 .28 .26 .33 .28 .36 .31 .41 .35 .46 .39 .51 .43 .56 Type I
.29 .35 .40 .43 .49 .55 .61 .67
.34 .41 .48 .52 .59 .66 .73 .80
.39 .47 .55 .59 .67 .75 .83 .91
.44 .54 .64 .73 .53 .65 .76 .87 .62 .75 .89 1.02 .67 .81 .96 1.10 .76 .92 1.09 1.25 .85 1.03 1.22 1.40 .94 1.15 1.35 1.55 1.03 1.26 1.48 1.70
400
500
600
900
.82 .99 1.15 1.23 1.41 1.58 1.75 1.92 Type II
1.01 1.21 1.41 1.51 1.72 1.93 2.14 2.35
1.19 1.42 1.66 1.78 2.02 2.27 2.52 2.76
1.40 1.70 2.00 2.28 2.80 3.25 3.62 3.97 Type III
*See Page 259 for Multiple Strand Rating Factor. #See Page 259 for Lubrication Details. RATINGS FOR INTERMEDIATE NUMBERS OF TEETH OR RPM MAY BE OBTAINED BY INTERPOLATION.
260
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Drives Horsepower Ratings for ANSI Roller Chains See Horsepower Ratings, page 259 Small Sprocket RPM 10 Teeth P.D. 11 1.77 .054 13 2.09 .065 15 2.40 .076 17 2.72 .087 19 3.04 .098 21 3.35 .109 23 3.67 .120 25 3.99 .132 Lubrication # Small Sprocket RPM 10 Teeth P.D. 11 2.22 .11 13 2.61 .13 15 3.01 .15 17 3.40 .17 19 3.80 .19 21 4.19 .21 23 4.59 .23 25 4.99 .26 Lubrication # Small Sprocket RPM 10 Teeth P.D. 11 2.66 .18 13 3.13 .22 15 3.61 .25 17 4.08 .29 19 4.56 .33 21 5.03 .37 23 5.51 .40 25 5.98 .44 Lubrication # Small Sprocket RPM 10 Teeth P.D. 11 3.55 .42 13 4.18 .51 15 4.81 .59 17 5.44 .68 19 6.08 .76 21 6.71 .85 23 7.34 .94 25 7.98 1.03 Lubrication #
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 40-1/2” PITCH 20
30
50
.10 .12 .14 .16 .18 .20 .22 .25
.15 .17 .20 .23 .26 .29 .32 .35
.23 .28. .32 .37 .42 .46 .51 .56
75
100 125 150 200 250 300 400 500 600 900 1200 1500 1800 2400 3000
.33 .43 .40 .52 .46 .60 .53 .69 .60 .78 .67 .87 .74 .96 .81 1.05 Type I
.53 .63 .74 .84 .95 1.06 1.17 1.28
.62 .74 .87 .99 1.12 1.25 1.38 1.51
.80 .96 1.12 1.29 1.45 1.62 1.78 1.95
.98 1.18 1.37 1.57 1.77 1.98 2.18 2.38
1.16 1.39 1.62 1.85 2.09 2.33 2.57 2.81
1.50 1.84 1.80 2.20 2.10 2.56 2.40 2.94 2.71 3.31 3.02 3.69 3.33 4.07 3.64 4.45 Type II
2.16 2.59 3.02 3.45 3.90 4.34 4.79 5.24
3.11 4.03 3.73 4.83 4.35 5.64 4.98 6.45 5.62 7.27 6.26 8.11 6.90 8.94 7.55 9.78 Type III
4.93 5.91 6.89 7.89 8.89 9.91 10.9 12.0
4.66 3.03 5.99 3.89 7.43 4.82 8.96 5.82 10.5 6.88 11.7 7.99 12.9 9.16 14.1 10.4 Type IV
2.17 2.79 3.45 4.17 4.92 5.72 6.55 7.43
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 50-5/8” PITCH 20
30
50
75
.20 .24 .28 .32 .36 .40 .44 .48
.28 .34 .40 .45 .51 .57 .63 .69 Type I
.45 .54 .63 .72 .81 .90 1.00 1.09
.65 .78 .90 1.04 1.17 1.30 1.44 1.57
100 125 150 200 250 300 400 600 900 1200 1500 1800 2100 2400 2700 .84 1.01 1.17 1.34 1.51 1.69 1.86 2.04
1.03 1.23 1.43 1.64 1.85 2.06 2.27 2.49
1.21 1.56 1.45 1.87 1.69 2.19 1.93 2.50 2.18 2.82 2.43 3.15 2.68 3.47 2.93 3.80 Type II
1.91 2.29 2.67 3.06 3.45 3.85 4.24 4.64
2.25 2.70 3.15 3.60 4.06 4.53 5.00 5.47
2.92 3.50 4.08 4.67 5.27 5.87 6.48 7.09
4.21 6.07 5.04 7.26 5.88 8.48 6.73 9.70 7.59 10.9 8.46 12.2 9.33 13.4 10.2 14.7 Type III
7.86 9.42 11.0 12.6 14.2 15.8 17.4 19.1
7.44 9.56 11.9 14.3 16.9 19.3 21.3 23.3
5.58 7.17 8.89 10.7 12.7 14.7 16.9 19.1
4.42 3.62 5.67 4.65 7.03 5.76 8.48 6.95 10.0 8.22 11.6 9.55 13.3 10.9 15.1 12.4 Type IV
3.04 3.90 4.83 5.83 6.89 8.01 9.18 10.4
H
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 60-3/4” PITCH 20
30
.34 .49 .41 .58 .47 .68 .54 .78 .61 .88 .68 .98 .75 1.08 .82 1.18 Type I
50
75
.78 .93 1.08 1.24 1.40 1.56 1.72 1.88
1.11 1.33 1.55 1.78 2.01 2.24 2.47 2.70
100 125 150 200 250 300 400 600 900 1200 1400 16001800 2000 2200 2400 1.44 1.76 2.07 1.72 2.11 2.48 2.01 2.46 2.90 2.30 2.82 3.32 2.60 3.18 3.74 2.89 3.54 4.17 3.19 3.91 4.60 3.49 4.28 5.04 Type II
2.69 3.22 3.76 4.31 4.86 5.41 5.97 6.53
3.29 3.94 4.59 5.26 5.93 6.61 7.29 7.98
3.87 5.02 4.64 6.01 5.41 7.01 6.20 8.03 6.99 9.05 7.78 10.1 8.59 11.1 9.40 12.2 Type III
7.23 10.5 8.65 12.5 10.1 14.6 11.6 16.7 13.0 18.8 14.5 21.0 16.0 23.2 17.5 25.4
11.9 15.3 18.9 21.7 24.4 27.2 30.2 32.9
9.45 7.70 6.49 12.1 9.89 8.34 15.0 12.3 10.3 18.2 14.8 12.5 21.5 17.5 14.7 24.9 20.3 17.1 28.6 23.3 19.6 32.4 26.4 22.3 Type IV
5.51 7.08 8.77 10.6 12.5 14.5 16.7 18.9
4.78 6.14 7.61 9.18 10.9 12.6 14.4 16.4
4.20 5.39 6.68 8.06 9.52 11.1 12.7 14.4
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 80-1” PITCH 20
30
.79 1.14 .95 1.36 1.10 1.59 1.26 1.82 1.43 2.05 1.59 2.29 1.75 2.52 1.92 2.76 Type I
50
75
1.80 2.16 2.52 2.88 3.25 3.62 4.00 4.38
2.60 3.11 3.63 4.15 4.68 5.22 5.76 6.30
100 125 150 200 250 300 400 600 900 1000 1200 1400 1600 1800 2000 2200 3.36 4.11 4.03 4.92 4.70 5.75 5.38 6.58 6.07 7.42 6.76 8.27 7.46 9.12 8.17 9.98 Type II
4.84 5.80 6.77 7.75 8.74 9.74 10.7 11.8
6.28 7.51 8.77 10.0 11.3 12.6 13.9 15.2
7.67 9.19 10.7 12.3 13.8 15.4 17.0 18.6
9.04 11.7 10.8 14.0 12.6 16.4 14.5 18.7 16.3 21.1 18.2 23.6 20.0 26.0 21.9 28.4 Type III
16.9 23.0 20.2 29.1 23.6 34.0 27.0 38.9 30.4 43.8 34.0 48.9 37.4 53.9 40.9 59.0
19.6 25.2 31.2 37.6 44.5 51.7 59.2 64.9
14.9 11.8 9.69 8.12 19.2 15.2 12.5 10.4 23.8 18.9 15.4 12.9 28.7 22.7 18.6 15.6 33.9 26.9 22.0 18.4 39.4 31.2 25.6 21.4 45.1 35.8 29.3 24.6 51.1 40.6 33.2 27.8 Type IV
6.94 8.91 11.0 13.3 15.7 18.3 21.0 23.8
6.01 7.72 9.57 11.5 13.6 15.9 18.2 20.6
*See Page 259 for Multiple Strand Rating Factor. #See Page 259 for Lubrication Details. RATINGS FOR INTERMEDIATE NUMBERS OF TEETH OR RPM MAY BE OBTAINED BY INTERPOLATION.
P-1930-BG
04/10
Boston Gear 800-825-6544
261
Roller Chain Drives Horsepower Ratings for ANSI Roller Chains See Horsepower Ratings, page 259 Small Sprocket RPM 10 Teeth P.D. 11 4.44 .81 13 5.22 .97 15 6.01 1.13 17 6.80 1.30 19 7.59 1.46 21 8.39 1.63 23 9.18 1.80 25 9.97 1.97 Lubrication #
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 100-1-1/4” PITCH 20
30
1.51 2.18 1.81 2.61 2.12 3.05 2.42 3.49 2.73 3.93 3.04 4.38 3.36 4.84 3.67 5.29 Type I
Small Sprocket RPM 10 20 Teeth P.D. 11 5.324 1.37 2.56 13 6.268 1.64 3.06 15 7.215 1.91 3.57 17 8.164 2.19 4.09 19 9.114 2.47 4.61 21 10.064 2.75 5.13 Lubrication #Type I
H
50
75
3.45 4.97 4.13 5.96 4.82 6.95 5.52 7.96 6.23 8.98 6.94 10.0 7.65 11.0 8.37 12.1 Type II
100
125
150
200
250
300
400
500
600
6.44 7.72 9.00 10.3 11.6 12.9 14.3 15.6
7.88 9.43 11.0 12.6 14.2 15.8 17.5 19.1
9.28 11.1 13.0 14.9 16.8 18.7 20.6 22.5
12.0 14.7 14.4 17.6 16.8 20.6 19.2 23.5 21.7 26.5 24.2 29.6 26.6 32.6 29.2 35.7 Type III
17.3 20.7 24.2 27.7 31.2 34.8 38.4 42.0
22.4 26.9 31.4 35.9 40.5 45.1 49.7 54.4
27.4 32.8 38.3 43.9 49.5 55.1 60.8 66.5
32.3 38.7 45.2 51.7 58.3 64.9 71.7 78.4
900 1000 1200 1400 27.5 23.4 35.3 30.1 43.7 37.3 52.7 45.0 62.3 53.2 72.4 61.8 83.0 70.9 94.1 80.3 Type IV
17.8 22.9 28.4 34.3 40.5 47.0 53.9 61.1
14.2 18.2 22.5 27.2 32.1 37.3 42.8 48.5
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 120-1-1/2” PITCH 30
50
3.68 4.41 5.14 5.88 6.64 7.39
5.82 6.97 8.13 9.31 10.5 11.7
75
100 125 150 200 250 300 400 500 600 700 800 900
8.40 10.9 10.1 13.0 11.7 15.2 13.4 17.4 15.2 19.6 16.9 21.8 Type II
13.3 15.9 18.6 21.3 24.0 26.7
15.6 18.7 21.9 25.0 28.2 31.4
20.3 24.8 24.3 29.7 28.3 34.7 32.4 39.7 36.5 44.8 40.7 49.8 Type IV
29.2 35.0 40.8 46.7 52.7 58.7
37.8 45.3 52.9 60.5 68.2 76.0
46.3 55.4 64.6 74.0 83.4 93.0
54.5 65.3 76.1 87.2 98.3 110
46.3 37.9 59.5 48.7 73.8 60.4 89.0 72.8 105 86.1 122 100 Type IV
1000 1200
31.8 40.8 50.6 61.0 72.1 83.8
27.1 34.9 43.2 52.1 61.6 71.6
20.6 26.5 32.9 39.6 46.8 54.4
Small HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 140-1-3/4” PITCH Sprocket RPM 10 20 30 50 75 100 125 150 200 250 300 400 500 600 700 800 Teeth P.D. 11 6.211 2.13 3.97 5.72 9.06 13.1 16.9 20.7 24.4 31.5 38.6 45.5 58.9 72.0 65.8 52.4 42.9 13 7.312 2.55 4.74 6.83 10.9 15.6 20.3 24.7 29.2 37.8 46.2 54.4 70.5 86.2 84.6 67.3 55.1 15 8.417 2.98 5.56 8.01 12.7 18.3 23.7 28.9 34.1 44.1 54.0 63.6 82.4 101 105 83.4 68.3 17 9.523 3.41 6.36 9.16 14.5 20.9 27.1 33.1 39.0 50.5 61.7 72.8 94.2 115 126 100 82.4 19 10.632 3.84 7.17 10.3 16.0 23.5 30.5 37.3 44.0 57.0 70.0 82.1 106 130 149 119 97.4 21 11.742 4.28 7.98 11.5 18.2 26.2 34.0 41.5 49.0 63.4 77.6 91.4 118 145 171 138 113 Lubrication # Type I Type II Type III Type IV Small Sprocket RPM 10 Teeth P.D. 11 7.099 3.07 13 8.357 3.67 15 9.620 4.28 17 10.884 4.90 19 12.151 5.53 21 13.419 6.16 Lubrication #Type I
900 35.9 46.2 57.2 69.1 81.6 94.8
HP RATINGS—STANDARD SINGLE * STRAND ROLLER CHAIN—NO. 160-2” PITCH 20
30
5.74 8.26 6.85 9.86 8.00 11.5 9.16 13.2 10.3 14.9 11.5 16.6 Type II
50
75
100
125
150
200
250
300
400
13.1 15.7 18.3 20.9 23.6 26.3
18.8 22.5 26.3 30.1 33.9 37.8
24.4 29.2 34.1 39.0 44.0 49.0 Type III
29.8 35.6 41.7 47.7 53.8 59.9
35.1 42.0 49.0 56.1 63.2 70.5
45.5 54.4 63.5 72.7 82.0 91.4
55.6 66.6 77.7 88.9 100 112
65.5 84.9 78.4 102 91.5 119 105 136 118 153 132 171
500
550
600
96.7 124 145 166 188 209 Type IV
83.9 108 134 161 190 220
73.5 94.4 117 141 166 194
*See Page 259 for Multiple Strand Rating Factor. #See Page 259 for Lubrication Details. RATINGS FOR INTERMEDIATE NUMBERS OF TEETH OR RPM MAY BE OBTAINED BY INTERPOLATION.
262
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Drives Selection SPEED RATIOS - CENTER DISTANCES - CHAIN LENGTHS Teeth Driven Sprocket
15 16 17 18 19 20 21 22 23 24 25 30 32 35 36 40 42 45
Teeth on Driver Sprocket 11
12
13
14
15
1.36 6.469 26 1.45 7.207 28 1.55 7.943 30 1.64 7.669 30 1.73 8.404 32 1.82 8.124 32 1.91 8.857 34 2.00 9.590 36 2.09 9.304 36 2.18 10.037 38 2.27 9.744 38 2.72 11.345 44 2.91 12.812 48 3.18 13.976 52 3.27 13.668 52 3.64 15.561 58 3.82 15.983 60 4.09 17.139 64
1.25 7.235 28 1.33 6.971 28 1.42 7.710 30 1.50 8.446 32 1.58 8.174 32 1.67 8.909 34 1.75 8.632 34 1.83 9.365 36 1.92 10.098 38 2.00 9.815 38 2.08 10.547 40 2.50 12.161 46 2.66 12.597 48 2.92 13.761 52 3.00 14.495 54 3.34 15.349 58 3.50 15.773 60 3.75 16.930 64
1.15 6.993 28 1.23 7.736 30 1.31 7.473 30 1.38 8.212 32 1.46 8.949 34 1.54 8.679 34 1.61 9.414 36 1.69 9.139 36 1.77 9.872 38 1.85 10.605 40 1.92 10.324 40 2.31 11.943 46 2.46 12.379 48 2.69 13.546 52 2.77 14.279 54 3.08 15.136 58 3.23 16.605 62 3.46 16.719 64
1.07 7.748 20 1.14 7.494 30 1.21 8.237 32 1.29 7.975 32 1.36 8.714 34 1.43 9.452 36 1.50 9.183 36 1.57 9.918 38 1.64 9.645 38 1.72 10.378 40 1.79 11.112 42 2.14 12.746 48 2.28 13.188 50 2.50 14.361 54 2.57 14.063 54 2.86 15.961 60 3.00 16.391 62 3.22 17.553 66
1.00 7.500 30 1.07 8.249 32 1.13 7.994 32 1.20 8.737 34 1.27 8.477 34 1.33 9.216 36 1.40 9.955 38 1.47 9.686 38 1.53 10.422 40 1.69 10.150 40 1.67 10.884 42 2.00 12.522 48 2.14 12.967 50 2.33 14.141 54 2.40 14.874 56 2.67 15.746 60 2.80 16.177 62 3.00 17.340 66
16
1.00 8.000 32 1.06 8.749 34 1.13 8.495 34 1.19 9.238 36 1.25 8.978 36 1.31 9.718 38 1.37 10.457 40 1.44 10.189 40 1.50 10.926 42 1.56 10.654 42 1.88 12.299 48 2.00 13.765 52 2.19 13.921 54 2.25 14.653 56 2.50 15.528 60 2.62 16.994 64 2.81 18.161 68
17
1.00 8.500 34 1.06 9.249 36 1.12 8.995 36 1.18 9.739 38 1.24 9.479 38 1.29 10.220 40 1.35 10.959 42 1.41 10.692 42 1.47 11.429 44 1.76 13.087 50 1.88 13.539 52 2.06 14.721 56 2.12 14.433 56 2.35 16.339 62 2.47 16.777 64 2.65 17.945 68
18
19
20
21
22
23
24
25
RATIO CENTER DISTANCE - IN PITCHES CHAIN LENGTH - IN PITCHES To obtain corresponding values in INCHES, multiply by the appropriate Chain Pitch. 1.00 9.000 36 1.06 9.749 38 1.11 9.495 38 1.17 10.239 40 1.22 9.980 40 1.28 10.721 42 1.33 11.461 44 1.39 11.195 44 1.67 12.858 50 1.78 13.314 52 1.94 14.497 56 2.00 15.230 58 2.22 16.119 62 2.34 16.557 64 2.50 17.728 68
1.00 9.500 38 1.05 10.249 40 1.11 9.995 40 1.16 10.740 42 1.21 10.481 42 1.26 11.222 44 1.31 11.963 46 1.58 13.638 52 1.68 14.099 54 1.84 15.288 58 1.89 15.006 58 2.10 16.920 64 2.21 17.364 66 2.37 18.536 70
1.00 10.000 40 1.05 10.749 42 1.10 10.496 42 1.15 11.240 44 1.20 10.982 44 1.25 11.723 46 1.50 13.406 52 1.60 13.869 54 1.75 15.061 58 1.80 15.795 60 2.00 16.697 64 2.10 17.142 66 2.25 18.317 70
1.00 10.500 42 1.05 11.249 44 1.10 10.996 44 1.14 11.741 46 1.19 11.483 46 1.43 13.172 52 1.52 14.646 56 1.67 14.833 58 1.71 15.567 60 1.90 16.473 64 2.00 17.939 68 2.14 18.096 70
1.00 11.000 44 1.05 11.749 46 1.09 11.496 46 1.14 12.241 48 1.36 13.942 54 1.45 14.413 56 1.59 15.613 60 1.64 15.338 60 1.82 17.262 66 1.91 17.714 68 2.04 18.895 72
1.00 11.500 46 1.04 12.249 48 1.09 11.996 48 1.30 13.705 54 1.39 14.178 56 1.52 15.382 60 1.56 16.117 62 1.74 17.035 66 1.83 17.489 68 1.96 18.671 72
H 1.00 12.000 48 1.04 12.750 50 1.25 14.469 56 1.33 14.946 58 1.46 16.155 62 1.50 15.886 62 1.67 17.818 68 1.75 18.275 70 1.88 19.463 74
1.00 12.500 50 1.20 14.228 56 1.28 14.708 58 1.40 15.921 62 1.44 16.658 64 1.60 17.588 68 1.68 18.047 70 1.80 19.237 74
For Center Distances other than listed in this Table, the Chain Length must be calculated, see Page 265.
P-1930-BG
04/10
Boston Gear 800-825-6544
263
Roller Chain Drives Selection SPEED RATIOS - CENTER DISTANCES - CHAIN LENGTHS Teeth Driven Sprocket
48 54 60 70 72 80 84
Teeth on Driver Sprocket 11
12
13
14
4.36 4.00 3.69 3.43 18.294 18.085 18.925 18.713 68 68 70 70 4.91 4.50 4.15 3.86 19.539 20.396 20.186 19.977 74 76 76 76 5.45 5.00 4.61 4.29 21.843 21.637 22.496 22.287 82 82 84 84 5.83 5.39 5.00 25.834 25.628 25.422 96 96 96 6.00 5.54 5.14 26.244 26.038 25.834 98 98 98 5.71 28.545 108 6.00 30.439 114
96
H
112
264
Boston Gear 800-825-6544
15
16
17
18
19
20
21
22
23
24
25
3.20 18.500 70 3.60 20.819 78 4.00 22.079 84 4.67 26.279 98 4.80 26.694 100 5.33 29.413 110 5.60 30.234 114
3.00 18.287 70 3.38 20.607 78 3.75 22.923 86 4.37 26.071 98 4.50 26.487 100 5.00 29.206 110 5.25 31.098 116 6.00 34.633 130
2.92 19.110 72 3.18 20.395 78 3.53 22.712 86 4.12 25.863 98 4.24 27.337 102 4.70 29.000 110 4.94 30.891 116 5.64 34.429 130
2.67 18.894 72 3.00 21.223 80 3.33 22.501 86 3.89 26.708 100 4.00 27.128 102 4.44 29.855 112 4.66 30.685 116 5.33 35.295 132
2.52 18.677 72 2.84 21.008 80 3.16 23.332 88 3.68 26.498 100 3.79 27.918 102 4.21 29.647 112 4.41 31.539 118 5.05 35.088 132 5.90 40.516 152
2.40 19.489 74 2.70 21.827 82 3.00 23.119 88 3.50 26.287 100 3.60 27.758 104 4.00 31.330 118 4.20 31.330 118 4.80 34.882 132 5.60 40.312 152
2.28 19.270 74 2.57 21.609 82 2.86 23.492 90 3.33 27.121 102 3.43 27.547 104 3.81 30.283 114 4.00 31.122 118 4.57 35.738 134 5.33 41.177 154
2.18 20.073 76 2.46 21.392 82 2.73 23.726 90 3.18 26.910 102 3.27 27.334 104 3.64 30.073 114 3.82 31.965 120 4.36 35.531 134 5.03 40.971 154
2.08 18.829 74 2.34 22.200 84 2.61 23.510 90 3.04 26.695 102 3.13 28.164 106 3.48 30.910 116 3.65 31.755 120 4.17 35.322 134 4.87 40.765 154
2.00 19.628 76 2.25 21.980 84 2.50 24.323 92 2.92 27.522 104 3.00 27.951 106 3.33 30.699 118 3.50 31.544 120 4.00 36.170 136 4.67 41.622 156
1.92 20.422 78 2.16 21.760 84 2.40 24.104 92 2.80 27.306 104 2.88 27.736 106 3.20 30.486 116 3.36 32.380 122 3.84 35.960 136 4.48 41.414 156
P-1930-BG
04/10
Roller Chain Drives Selection Pitch Conversion Chart TO DETERMINE CHAIN LENGTH IN PITCHES (Approximately): Chain Length in Pitches =
(
)(
)
2 x CD (inches) + Teeth in Driver & Driven + Constant Pitch 2
Add for Ratio Constant
{
up to 4 : 1=12 4 to 6: 1=4 6 to 8: 1=6
}
This chart gives chain length in feet when number of pitches and chain pitch (in inches) is known
No. of Pitches
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 24 28 30 34 38 40 44 48 50 54 58 60 65 70 75 80 85 90 95 100
P-1930-BG
Chain Pitch — Inches 1/4 3/8 1/2 Chain Length — Feet
0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.25 0.27 0.29 0.31 0.33 0.35 0.37 0.39 0.41 0.45 0.50 0.58 0.62 0.70 0.79 0.83 0.91 1.00 1.04 1.12 1.20 1.25 1.35 1.45 1.56 1.66 1.77 1.87 1.97 2.08
04/10
0.03 0.06 0.09 0.12 0.15 0.18 0.21 0.25 0.28 0.31 0.34 0.37 0.40 0.43 0.46 0.50 0.53 0.56 0.59 0.62 0.68 0.75 0.87 0.93 1.06 1.18 1.25 1.37 1.50 1.56 1.68 1.81 1.87 2.03 2.18 2.34 2.50 2.65 2.81 2.96 3.12
0.04 0.08 0.12 0.16 0.20 0.25 0.29 0.33 0.37 0.41 0.45 0.50 0.54 0.58 0.62 0.66 0.70 0.75 0.79 0.83 0.91 1.00 1.16 1.25 1.41 1.58 1.66 1.83 2.00 2.08 2.25 2.41 2.50 2.70 2.91 3.12 3.33 3.54 3.75 3.95 4.16
5/8
3/4
1
1-1/4
1-1/2
1-3/4
2
2-1/4
2-1/2
0.05 0.10 0.15 0.20 0.26 0.31 0.36 0.41 0.46 0.52 0.57 0.62 0.67 0.72 0.78 0.83 0.88 0.93 0.98 1.04 1.14 1.25 1.45 1.56 1.77 1.97 2.08 2.29 2.50 2.60 2.81 3.02 3.12 3.38 3.64 3.90 4.16 4.42 4.68 4.94 5.20
0.06 0.12 0.18 0.25 0.31 0.37 0.43 0.50 0.56 0.62 0.68 0.75 0.81 0.87 0.93 1.00 1.06 1.12 1.18 1.25 1.37 1.50 1.75 1.87 2.12 2.37 2.50 2.75 3.00 3.12 3.37 3.62 3.75 4.06 4.37 4.68 5.00 5.31 5.62 5.93 6.25
0.08 0.16 0.25 0.33 0.41 0.50 0.58 0.66 0.75 0.83 0.91 1.00 1.08 1.16 1.25 1.33 1.41 1.50 1.58 1.66 1.83 2.00 2.33 2.50 2.83 3.16 3.33 3.66 4.00 4.16 4.50 4.83 5.00 5.41 5.83 6.25 6.66 7.08 7.50 7.91 8.33
0.10 0.20 0.31 0.41 0.52 0.62 0.72 0.83 0.93 1.04 1.14 1.25 1.35 1.45 1.56 1.66 1.77 1.87 1.97 2.08 2.29 2.50 2.91 3.12 3.54 3.95 4.16 4.58 5.00 5.20 5.62 6.04 6.25 6.77 7.29 7.81 8.33 8.85 9.37 9.89 10.41
0.12 0.25 0.37 0.50 0.62 0.75 0.87 1.00 1.12 1.25 1.37 1.50 1.62 1.75 1.87 2.00 2.12 2.25 2.37 2.50 2.75 3.00 3.50 3.75 4.25 4.75 5.00 5.50 6.00 6.25 6.75 7.25 7.50 8.12 8.75 9.37 10.00 10.62 11.25 11.87 12.50
0.14 0.29 0.43 0.58 0.72 0.87 1.02 1.16 1.31 1.45 1.60 1.75 1.89 2.04 2.18 2.33 2.47 2.62 2.77 2.91 3.20 3.50 4.08 4.37 4.95 5.54 5.83 6.41 7.00 7.29 7.87 8.45 8.75 9.47 10.20 10.93 11.66 12.39 13.12 13.85 14.58
0.16 0.33 0.50 0.66 0.83 1.00 1.16 1.33 1.50 1.66 1.83 2.00 2.16 2.33 2.50 2.66 2.83 3.00 3.16 3.33 3.66 4.00 4.56 5.00 5.66 6.33 6.66 7.33 8.00 8.33 9.00 9.66 10.00 10.83 11.66 12.50 13.33 14.16 15.00 15.83 16.66
0.18 0.37 0.56 0.75 0.93 1.12 1.31 1.50 1.68 1.87 2.06 2.25 2.43 2.62 2.81 3.00 3.18 3.37 3.56 3.75 4.12 4.50 5.25 5.62 6.37 7.12 7.50 8.25 9.00 9.37 10.12 10.87 11.25 12.18 13.12 14.06 15.00 15.93 16.87 17.81 18.75
0.20 0.41 0.62 0.83 1.04 1.25 1.45 1.66 1.87 2.08 2.29 2.50 2.70 2.91 3.12 3.33 3.54 3.75 3.95 4.16 4.58 5.00 5.83 6.25 7.08 7.91 8.33 9.16 10.00 10.41 11.25 12.08 12.50 13.54 14.58 15.62 16.66 17.70 18.75 19.79 20.83
Boston Gear 800-825-6544
265
H
Miniature Chain Sprockets Single Strand .1475 Pitch; Plastic and Stainless Steel ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Hub Dia.
Bore
O.D.
Length thru Bore
Catalog Number
Item Code
15BP7 15BP8 15BP9 15BP10 15BP12 15BP13 15BP14 15BP15 15BP16 15BP17 15BP18 15BP19 15BP20 15BP21 15BP22 15BP23 15BP24 15BP25 15BP26 15BP27 15BP28 15BP29 15BP30 15BP31 15BP32 15BP33 15BP34 15BP35 15BP36 15BP38 15BP40 15BP42 15BP44 15BP52
54144 54145 54146 54147 54148 54149 54150 54151 54152 54153 54154 54155 54156 54157 54158 54159 54160 54161 54162 54163 54164 54165 54166 54167 54168 54169 54170 54171 54172 54173 54174 54175 54176 54177
TYPE B SINGLE HUB PLASTIC (NYLATRON GS)
PLASTIC .062
P.D. BORE
O.D.
H
L
H
STAINLESS STEEL 7-28 TEETH .062 SETSCREW P.D. BORE
O.D.
H
L
30-48 TEETH .062 .031 SETSCREW P.D. BORE
O.D.
H
.109 L
7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 38 40 42 44 52
.340 .385 .431 .477 .570 .616 .663 .709 .756 .803 .849 .890 .943 .990 1.036 1.083 1.130 1.177 1.224 1.270 1.317 1.364 1.411 1.458 1.505 1.552 1.598 1.645 1.692 1.786 1.880 1.974 2.068 2.443
.093
3/16 7/32
.1250 1/4 3/8 .1875 1/2
.250
5/8
.392 .437 .483 .529 .622 .668 .715 .761 .808 .855 .901 .948 .995 1.042 1.088 1.135 1.182 1.228 1.276 1.322 1.369 1.416 1.463 1.510 1.557 1.604 1.650 1.697 1.744 1.838 1.922 2.026 2.120 2.495
3/8
TYPE B SINGLE HUB STAINLESS STEEL (TYPE 303 – CLEAR PASSIVATED)
7 8 9 10 12 15 16 18 20 24 28 30 34 36 40 48
.340 .385 .431 .477 .570 .709 .756 .849 .943 1.130 1.317 1.411 1.598 1.692 1.880 2.255
.0937 .1250
.1875
15/64* 9/32* 21/64* 3/8* 25/64 17/32 9/16 21/32
3/4 .2500
.392 .437 .483 .529 .622 .761 .808 .901 .995 1.182 1.369 1.463 1.650 1.744 1.932 2.307
11/32
13/32
15BSS7 15BSS8 15BSS9 15BSS10 15BSS12 15BSS15 15BSS16 15BSS18 15BSS20 15BSS24 15BSS28 15BSS30 15BSS34 15BSS36 15BSS40 15BSS48
54178 54179 54180 54181 54182 54183 54184 54185 54186 54187 54188 54189 54190 54191 54192 54193
STANDARD TOLERANCES* Dimension Tolerance Bore
All
±.001 to –.000
*Stainless Steel Only.
266
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 25 1/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Catalog Number
Item Code
25A32 25A36 25A40 25A45 25A48 25A54 25A60 25A72
68195 46224 46225 68198 46226 46227 46228 46229
TYPE A NO HUB STEEL
32 36 40 45 48 54 60 72 No. of Teeth
2.551 2.868 3.186 3.584 3.822 4.300 4.777 5.731 Pitch Dia.
3/8
1/2
ORDER BY CATALOG NUMBER OR ITEM CODE With Setscrew* Without Setscrew Length Hub Bore thru Catalog Item Catalog Item Dia. Bore Number Code Number Code
TYPE A
TYPE B SINGLE HUB STEEL
9 10 11
.731 .809 .887
12
.966
13
1.045
14
1.123
15
1.202
16
1.281
17
1.361
18
1.440
19
1.519
20
1.598
21
1.677
22
1.757
23
1.836
24
1.915
P-1930-BG
04/10
1/4 1/4 1/4 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/4 5/16 3/8 1/2 1/4 3/8 1/2 1/4 3/8 1/2 5/8 1/4 3/8 1/2 5/8 3/8 1/2 5/8 3/8 1/2 5/8 3/8 1/2 5/8 3/8 1/2 5/8
29/64 17/32 9/16
1/2 1/2 1/2
11/16
1/2
11/16
1/2
3/4
1/2
3/4
1/2
13/16
1/2
29/32
1/2
1
1/2
1-1/16
1/2
1-5/32
1/2
1-3/8
5/8
1-7/16
5/8
1-1/2
5/8
1-1/2
5/8
25B9 – 1/4 25B10 – 1/4 25B11 – 1/4 25B12 – 1/4 25B12 – 5/16 25B12 – 3/8 25B13 – 1/4 25B13 – 5/16 25B13 – 3/8 25B14 – 1/4 25B14 – 5/16 25B14 – 3/8 25B15 – 1/4 25B15 – 5/16 25B15 – 3/8 25B16 – 1/4 25B16 – 5/16 25B16 – 3/8 25B17 – 1/4 25B17 – 5/16 25B17 – 3/8 25B17 – 1/2 25B18 – 1/4 25B18 – 3/8 25B18 – 1/2 25B19 – 1/4 25B19 – 3/8 25B19 – 1/2 25B19 – 5/8 25B20 – 1/4 25B20 – 3/8 25B20 – 1/2 25B20 – 5/8 25B21 – 3/8 25B21 – 1/2 25B21 – 5/8 25B22 – 3/8 25B22 – 1/2 25B22 – 5/8 25B23 – 3/8 25B23 – 1/2 25B23 – 5/8 25B24 – 3/8 25B24 – 1/2 25B24 – 5/8
68466 58230 68468 19200 58231 58232 19202 68470 68471 19204 68473 68474 19206 58233 58234 19208 58235 58236 19210 58237 58238 58239 19212 58240 58241 19214 58242 58243 58244 19216 58245 58246 58247 45670 45671 45672 45673 45674 45675 45676 45677 45678 45679 45680 45681
25B9 25B10 25B11 25B12A 25B12 — 25B13A 25B13 — 25B14A 25B14 — 25B15A 25B15 — 25B16A 25B16 — 25B17A 25B17 — — 25B18A 25B18 — 25B19A 25B19 — — 25B20A 25B20 — — 25B21 — — 25B22 — — 25B23 — — 25B24 — —
68465 15600 68467 19199 15602 — 19201 15603 — 19203 68472 — 19205 15604 — 19207 15606 — 19209 15608 — — 19211 15610 — 19213 15612 — — 19215 15614 — — 68187 — — 68188 — — 68189 — — 68190 — —
TYPE B
.110 MAX.
.110 MAX.
P.D.
P.D.
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.234"
STANDARD TOLERANCES Dimension
Type A Type B
Bore Bore
Tolerance
All All
+.002 - .001 ±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have 10-32 setscrews.
Boston Gear 800-825-6544
267
Roller Chain Sprockets Single Strand No. 25 1/4" Pitch; Steel and Stainless Steel No. of Teeth
Pitch Dia.
ORDER BY CATALOG NUMBER OR ITEM CODE With Setscrew* Without Setscrew Length Hub thru Bore Catalog Item Catalog Item Dia. Bore Number Code Number Code
TYPE B SINGLE HUB STEEL
.110 MAX.
P.D.
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.234”
25
1.995
26
2.074
28
2.233
30
2.392
32
2.551
36
2.868
40
3.186
45
3.584
48
3.822
54
4.300
60
4.777
72
5.731
STANDARD TOLERANCES Dimension Bore
All
Tolerance ±.001
3/8 1/2 5/8 3/8 1/2 5/8 3/8 1/2 5/8 3/8 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4
1-1/2
5/8
1-1/2
5/8
1-1/2
5/8
1-9/32
1/2
1-1/2
5/8
1-1/2
3/4
2
3/4
2
3/4
2
3/4
2
3/4
2
3/4
2
3/4
25B25 – 3/8 25B25 – 1/2 25B25 – 5/8 25B26 – 3/8 25B26 – 1/2 25B26 – 5/8 25B28 – 3/8 25B28 – 1/2 25B28 – 5/8 25B30 – 3/8 25B30 – 1/2 25B30 – 5/8 25B30 – 3/4 25B32 – 1/2 25B32 – 5/8 25B32 – 3/4 25B36 – 1/2 25B36 – 5/8 25B36 – 3/4 25B40 – 1/2 25B40 – 5/8 25B40 – 3/4 25B45 – 1/2 25B45 – 5/8 25B45 – 3/4 25B48 – 1/2 25B48 – 5/8 25B48 – 3/4 25B54 – 1/2 25B54 – 5/8 25B54 – 3/4 25B60 – 1/2 25B60 – 5/8 25B60 – 3/4 25B72 – 3/4 25B72 – 5/8 25B72 – 3/4
45682 25B25 45683 45684 45685 25B26 45686 45687 45692 25B28 45693 45694 58248 25B30 58249 58250 58251 67922 25B32 45695 45696 58252 25B36 45709 45710 58253 25B40 45723 45724 67925 25B45 45725 45726 58254 25B48 45727 45728 58255 25B54 45729 45730 58256 25B60 45731 45732 58257 25B72 45739 45740
68191 68192 68193 15616
68204 15618 15620 68207 15622 15624 15626 15628
TYPE B SINGLE HUB STAINLESS STEEL
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *Sprockets 28 and 30 teeth have 10-32 setscrews. 32-72 teeth 1/4-20 setscrews.
268
Boston Gear 800-825-6544
9 10 11 12 13 14 15 16 17 18 19 20 25 30 36 40 45 60
.731 .809 .887 .966 1.045 1.123 1.202 1.281 1.361 1.440 1.519 1.598 1.995 2.392 2.868 3.186 3.584 4.777
1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 1/4 3/8 3/8 3/8 1/2 1/2 1/2
7/16 1/2 9/16 5/8 23/32 13/16 57/64 31/32 1-1/32 1-1/8 1-7/32 1-9/32 1-1/2 1-1/2 1-1/2 2 2 2
1/2
5/8 3/4
25B9SS 25B10SS 25B11SS 25B12SS 25B13SS 25B14SS 25B15SS 25B16SS 25B17SS 25B18SS 25B19SS 25B20SS 25B25SS 25B30SS 25B36SS 25B40SS 25B45SS 25B60SS
P-1930-BG
69448 69449 69450 69451 69452 69453 69456 69467 69468 69469 69470 69471 69472 69473 69474 69475 69476 69477
04/10
Roller Chain Sprockets Single Strand No. 35 3/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Catalog Number
Item Code
35A26 35A28 35A30 35A32 35A36 35A40 35A45 35A48 35A72
67761 67763 67764 46230 46232 46233 46235 46236 67775
TYPE A NO HUB STEEL
26 28 30 32 36 40 45 48 72
3.111 3.349 3.588 3.826 4.303 4.780 5.376 5.734 8.597
1/2 5/8 19/32 23/32
ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Catalog Item Catalog Item Teeth Bore Number Code Number Code TYPE B SINGLE HUB STEEL
8 9
.980 1.096
10
1.214
11
1.331
12
1.449
13
1.567
14
1.685
15
1.804
16
17
1.922
2.041
18
2.160
19
2.278
20
2.397
21
2.516
P-1930-BG
04/10
3/8 3/8 3/8 1/2 5/8 3/8 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1
3/4† 27/32†
3/4 3/4
31/32†
3/4
1-1/6†
3/4
1-7/32† 3/4 1-1/4†
3/4
1-1/4
3/4
1-11/32 3/4 1-15/32 3/4
1-19/32 3/4
1-23/32 3/4
1-27/32 3/4
1-15/16 3/4
2
7/8
35B8 – 3/8* 35B9 – 3/8 35B10 – 3/8 35B10 – 1/2* 35B10 – 5/8* 35B11 – 3/8 35B11 – 1/2 35B11 – 5/8* 35B11 – 3/4* 35B12 – 1/2 35B12 – 5/8* 35B12 – 3/4* 35B13 – 1/2 35B13 – 5/8* 35B13 – 3/4* 35B14 – 1/2 35B14 – 5/8* 35B14 – 3/4* 35B15 – 1/2 35B15 – 5/8 35B15 – 3/4* 35B16 – 1/2 35B16 – 5/8 35B16 – 3/4 35B17 – 1/2 35B17 – 5/8 35B17 – 3/4 35B17 – 7/8 35B17 – 1* 35B18 – 1/2 35B18 – 5/8 35B18 – 3/4 35B18 – 7/8 35B18 – 1 35B19 – 1/2 35B19 – 5/8 35B19 – 3/4 35B19 – 1 35B20 – 1/2 35B20 – 5/8 35B20 – 3/4 35B20 – 1 35B21 – 1/2 35B21 – 5/8 35B21 – 3/4 35B21 – 1
49474 45750 45751 14886 45752 45753 14890 45754 45755 14892 14894 14896 14898 14900 14902 14904 14906 14908 14910 14912 14914 14916 14918 14920 14922 14924 14926 45756 14928 14930 14932 14934 46674 14936 45757 14938 14940 14942 45758 14944 14946 14948 45759 14950 14952 14954
35B8 35B9 35B10
TYPE A
15630† 14882 14884
35B11
14888
35B12
15632
35B13
15634
35B14
15636
35B15
15638
35B16
15640
TYPE B
.168 MAX.
.168 MAX.
P.D.
P.D.
H
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.359”
STANDARD TOLERANCES
35B17
15642
35B18
15644
35B19
15646
Dimension
Type A Type B
Bore Bore
Tolerance
All All
+.002 - .001 ±.001
Reference Pages
35B20
15648
35B21
15650
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 1/4-20 setscrews located over keyway, except at 90° where marked.
✝Has recessed grove in hub for chain clearance.
Boston Gear 800-825-6544
269
Roller Chain Sprockets Single Strand No. 35 3/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Hub Dia.
Bore
With Keyway Length and Setscrew* thru Item Bore Catalog Number Code
Without Keyway and Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
22
23
24
.168 MAX.
25
26
2.635
2.754
2.873
2.992
3.111
P.D. 28
3.349
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.359”
STANDARD TOLERANCES Dimension Bore
All
30
3.588
32
3.826
36
4.303
40
4.780
45
5.376
48 54 60
5.734 6.449 7.165
72 84 96 112
8.597 10.029 11.461 13.371
Tolerance ±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 1/4-20 setscrew located over keyway, except at 90° where marked.
270
Boston Gear 800-825-6544
1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 1/2 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 5/8 3/4 1 3/4 3/4 3/4 3/4
2
7/8
2
7/8
2
2
2
2
2
7/8
7/8
7/8
78
7/8
2
7/8
2-1/4
7/8
2-1/4
1
2-1/4
1
2-1/4 2-1/4 2-1/4
1 1 1
2-1/4 2-1/4 2-1/4 2-1/4
1 1 1 1
35B22 – 1/2 35B22 – 5/8 35B22 – 3/4 35B22 – 1 35B23 – 1/2 35B23 – 5/8 35B23 – 3/4 35B23 – 1 35B24 – 1/2 35B24 – 5/8 35B24 – 3/4 35B24 – 1 35B25 – 1/2 35B25 – 5/8 35B25 – 3/4 35B25 – 1 35B26 – 1/2 35B26 – 5/8 35B26 – 3/4 35B26 – 1 35B28 – 1/2 35B28 – 5/8 35B28 – 3/4 35B28 – 1* 35B30 – 1/2 35B30 – 5/8 35B30 – 3/4 35B30 – 1* 35B32 – 1/2 35B32 – 5/8 35B32 – 3/4 35B32 – 1* 35B36 – 5/8 35B36 – 3/4 35B36 – 1* 35B40 – 5/8 35B40 – 3/4 35B40 – 1 35B45 – 5/8 35B45 – 3/4 35B45 – 1 – – 35B60 – 3/4 35B60 – 1 – – – –
45760 14956 14958 14960 45761 14962 14964 14966 45762 14968 14970 14972 45763 14974 14976 14978 45764 68257 68258 68259 45766 68263 68264 68265 45767 68266 68267 68268 45768 68269 68270 68271 68275 68276 68277 68278 68279 68280 45772 45773 45774 – – 45782 45783 – – – –
35B22
15652
35B23
15654
35B24
15656
35B25
15658
35B26
67808
35B28
67810
35B30
15660
35B32
15662
35B36
15664
35B40
15666
35B45A
46241
35B48 35B54 35B60
15668 15670 15672
35B72 35B84 35B96 35B112
15674 15676 15678 15680
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 35 3/8" Pitch; Stainless Steel
No. of Teeth
ORDER BY CATALOG NUMBER OR ITEM CODE Without Keyway Length or Setscrew Pitch Bore Hub thru Catalog Item Dia. Dia. Bore Number Code
TYPE A NO HUB STEEL
9 10 11 12 13 14 15 16 17 18 19 20 25 30 35 40 45 60
1.096 1.214 1.331 1.449 1.567 1.685 1.804 1.922 2.041 2.160 2.278 2.397 2.992 3.588 4.183 4.780 5.376 7.165
3/8
1/2
27/32† 31/32† 1-1/16† 1-7/32† 1-1/4† 1-1/4 1-11/32 1-15//32 1-19/32 1-23/32 1-27/32 1-15/16
3/4
3/4
1/2
2
7/8
5/8
2-1/4
1
3/4
2-1/4
1
35B9SS 35B10SS 35B11SS 35B12SS 35B13SS 35B14SS 35B15SS 35B16SS 35B17SS 35B18SS 35B19SS 35B20SS 35B25SS 35B30SS 35B35SS 35B40SS 35B45SS 35B60SS
69478 69479 69480 69481 69482 69483 69484 69485 69486 69487 69488 69489 69490 69511 69512 69513 69624 69682
.168 MAX.
P.D.
†Has recessed groove in hub for chain reference.
Double Strand No. 35 3/8" Pitch; Stainless Steel ORDER BY CATALOG NUMBER OR ITEM CODE Without Keyway No. Length Pitch Hub or Setscrew of Bore thru Dia. Dia. Catalog Item Teeth Bore Number Code TYPE B SINGLE HUB STEEL
16 17 18 19 20 21 22 23 24 25 30
1.922 2.041 2.160 2.278 2.397 2.516 2.635 2.754 2.873 2.992 3.588
1/2
3/4
3/4
1-15/32 1-19/32 1-23/32 1-7/8 1-15/16 2-1/16 2-3/16 2-1/4 2-1/4 2-1/4 2-1/2
1-1/4
1-3/8
1-3/8
D35B16 D35B17 D35B18 D35B19 D35B20 D35B21 D35B22 D35B23 D35B24 D35B25 D35B30
15930 15932 15934 15936 15938 15940 15942 15944 15946 15948 69995
.561 MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.359” STANDARD TOLERANCES Dimension Tolerance Stainless Steel Bore All Double Strand Bore All
P-1930-BG
04/10
+.002 —.000 ±.001
.300
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317
P.D.
.162 MAX
Boston Gear 800-825-6544
271
H
Roller Chain Sprockets Single Strand No. 41 1/2" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Catalog Number
Item Code
41A21 41A22 41A23 41A24 41A25 41A26 41A27 41A28 41A30 41A32 41A36 41A40 41A45 41A48 41A54 41A60 41A72 41A96
56742 56743 56744 56745 56746 67876 67877 67878 16094 16096 16098 16100 16102 16104 16106 16108 16112 16116
TYPE A—NO HUB STEEL
TYPE A
TYPE B
.227 MAX.
.227 MAX.
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.391”
STANDARD TOLERANCES Dimension
Type A Type B
Bore Bore
6 7 8 9
1.000 1.15 1.307 1.462
10
1.618
11
1.775
Tolerance
All All
+.002 - .001 ±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 1/4-20 setscrews located over keyway except at 90° where marked. ✝Has recessed groove in hub for chain clearance.
272
3.355 3.513 3.672 3.831 3.989 4.148 4.307 4.466 4.783 5.101 5.737 6.373 7.168 7.645 8.599 9.554 11.463 15.282
5/8
19/32
23/32
15/16
ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Catalog Item Catalog Item Teeth Bore Number Code Number Code TYPE B SINGLE HUB STEEL
P.D.
P.D.
21 22 23 24 25 26 27 28 30 32 36 40 45 48 54 60 72 96
Boston Gear 800-825-6544
12
13
14
15
1.932
2.089
2.247
2.405
3/8 3/8 1/2 1/2 5/8 1/2 5/8 3/4 1/2 5/8 3/4 1/2 5/8 3/4 7/8 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 1
21/32† 3/4† 63/64† 1-1/8†
7/8 7/8 7/8 7/8
1-1/4†
7/8
1-7/16†
7/8
1-9/16†
1-9/16†
1-3/4
1-29/32
7/8
7/8
7/8
7/8
— — — 41B9-1/2 41B9-5/8* 41B10-1/2 41B10-5/8* 41B10-3/4* 41B11-1/2 41B11-5/8 41B11-3/4* 41B12-1/2 41B12-5/8 41B12-3/4 41B12-7/8 41B13-1/2 41B13-5/8 41B13-3/4 41B13-7/8 41B13-1* 41B14-1/2 41B14-5/8 41B14-3/4 41B14-7/8 41B14-1* 41B15-1/2 41B15-5/8 41B15-3/4 41B15-1
— — — 15506 15508 15510 15512 15514 15516 15518 15520 15522 15524 15526 35950 15528 15530 15532 35952 15534 15536 15538 15540 35954 15542 15544 15546 15548 15550
41B6 41B7 41B8 41B9
15758 15760 15762 15764
41B10
15766
41B11
15768
41B12
15770
41B13
15772
41B14
15774
41B15
15776
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 41 1/2" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Item Catalog Item Teeth Bore Catalog Number Code Number Code TYPE B SINGLE HUB STEEL
16
2.563
17
2.721
18
2.879
19
3.038
20
3.196
21
3.355
22
3.513
23
3.672
24
3.831
25
3.989
26
4.148
27
4.307
28
4.466
30
4.783
32 36 40 45 48 54 60 72 96
5.101 5.737 6.373 7.168 7.645 8.599 9.554 11.463 15.282
P-1930-BG
04/10
5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 3/4 1 5/8 5/8 3/4 3/4 3/4 3/4 3/4 3/4 1
2-1/16
7/8
2-15/64
1
2-3/8
1
2-15/32
1
2-3/4
1
2-7/8
1
3
1
3-3/16
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4 3-1/4 3-1/4 3-1/2 3-1/2 3-1/2 3-1/2 4 4
1 1 1-1/16 1-1/16 1-1/16 1-1/16 1-1/16 1-3/16 1-3/16
41B16-5/8 41B16-3/4 41B16-1 41B17-5/8 41B17-3/4 41B17-1 41B18-5/8 41B18-3/4 41B18-1 41B19-5/8 41B19-3/4 41B19-1 41B20-5/8 41B20-3/4 41B20-1 41B21-5/8 41B21-3/4 41B21-1 41B22-5/8 41B22-3/4 41B22-1 41B23-5/8 41B23-3/4 41B23-1 41B24-5/8 41B24-3/4 41B24-1 41B25-5/8 41B25-3/4 41B25-1 41B26-5/8 41B26-3/4 41B26-1 41B27-5/8 41B27-3/4 41B27-1 41B28-5/8 41B28-3/4 41B28-1 41B30-5/8 41B30-3/4 41B30-1 — — — — — — — — —
15552 15554 15556 15558 15560 15562 15564 15566 15568 35956 15570 15572 35958 15574 15576 35960 15578 15580 35962 15582 15584 35964 15586 15588 35966 15590 15592 35968 15594 15596 68281 68282 68283 68284 68285 68286 68287 68288 68289 68290 68291 68292 — — — — — — — — —
41B16
15778
41B17
15780
41B18
15782
41B19
15784
41B20
15786
41B21
15788
41B22
15790
41B23
15792
41B24
15794
41B25
15796
41B26
67920
41B27
67930
.227 MAX.
P.D.
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.391”
STANDARD TOLERANCES Dimension
Bore 41B28
67931
41B30
16464
41B32 41B36 41B40 41B45 41B48 41B54 41B60 41B72 41B96
16466 16468 16470 16472 16474 16476 16478 16482 16486
Tolerance
All
±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyways. All sprockets have 1/4-20 setscrews located over keyway.
Boston Gear 800-825-6544
273
Roller Chain Sprockets Single Strand No. 40 1/2" Pitch; Steel
ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Catalog Number
Item Code
40A19 40A20 40A21 40A22 40A23 40A24 40A25 40A26 40A27 40A28 40A30 40A32 40A35 40A36 40A38 40A40 40A42 40A45 40A48 40A54 40A60 40A72 40A84 40A96 40A112
68007 68008 56747 56748 56749 56750 56751 67014 67015 67016 16258 16260 68023 16262 68026 16264 16266 16268 16270 16272 16274 16278 16282 16284 16286
TYPE A—NO HUB STEEL
TYPE A
19 20 21 22 23 24 25 26 27 28 30 32 35 36 38 40 42 45 48 54 60 72 84 96 112
TYPE B
.284 MAX.
.284 MAX.
P.D.
P.D.
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.469”
STANDARD TOLERANCES Dimension Tolerance
Type A Type B
Bore Bore
All All
+.002 - .001 ±.001
Reference Pages Alterations –316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyways. All sprockets have 1/4-20 setscrews, located over keyway, except at 90° where marked.
8
1.307
9
1.462
10
11
12
13
14
15
Boston Gear 800-825-6544
5/8
19/32
23/32
15/16
ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Item Catalog Item Teeth Bore Catalog Number Code Number Code TYPE B SINGLE HUB STEEL
1.618
1.775
1.932
2.089
2.247
✝Has recessed groove in the hub for chain clearance.
274
3.038 3.196 3.355 3.513 3.672 3.831 3.989 4.148 4.307 4.466 4.783 5.101 5.578 5.737 6.055 6.373 6.691 7.168 7.645 8.599 9.554 11.463 13.372 15.282 17.828
2.405
1/2 1/2 5/8 1/2 5/8 3/4 1/2 5/8 3/4 7/8 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 7/8 1 1/2 5/8 3/4 7/8 1 1-1/8 1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4
31/32†
7/8
1-1/16†
7/8
1-1/4†
1-3/8†
1-9/16†
1-9/16
1-11/16
1-13/16
7/8
7/8
7/8
7/8
7/8
7/8
— — 40B9-1/2* 14980 40B9-5/8* 14982 40B10-1/2 14984 40B10-5/8* 14986 40B10-3/4* 14988 40B11-1/2 36054 40B11-5/8 14990 40B11-3/4 14992 40B11-7/8* 14994 40B12-1/2 36056 40B12-5/8 14996 40B12-3/4 14998 40B12-7/8 15000 40B12-1* 15002 40B13-1/2 36058 40B13-5/8 15004 40B13-3/4 15006 40B13-7/8 15008 40B13-1* 15010 40B14-1/2 36060 40B14-5/8 15012 40B14-3/4 15014 40B14-7/8 15016 40B14-1 15018 40B14-1-1/8* 56732 40B15-1/2 36062 40B15-5/8 15020 40B15-3/4 15022 40B15-7/8 15024 40B15-1 15026 40B15-1-1/8 15028 40B15-1-3/16* 15030 40B15-1-1/4* 15032
40B8 40B9
15682 15684
40B10
15686
40B11
15688
40B12
15690
40B13
15692
40B14
15694
40B15
15696
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 40 1/2" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Item Catalog Item Teeth Bore Catalog Number Code Number Code TYPE B SINGLE HUB STEEL
16
17
18
19
20
21
P-1930-BG
2.563
2.721
2.879
3.038
3.196
3.355
04/10
5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2
2
2-1/8
2-5/16
2-1/2
2-5/8
2-3/4
7/8
1
1
1
1
1
40B16-5/8 15034 40B16-3/4 15036 40B16-7/8 15038 40B16-1 15040 40B16-1-1/8 36064 40B16-1-3/16 15042 40B16-1-1/4 15044 40B17-5/8 15046 40B17-3/4 15048 40B17-7/8 36066 40B17-1 15050 40B17-1-1/8 15052 40B17-1-3/16 15054 40B17-1-1/4 56733 40B18-5/8 36068 40B18-3/4 15056 40B18-7/8 15058 40B18-1 15060 40B18-1-1/8 15062 40B18-1-3/16 15064 40B18-1-1/4 15066 40B18-1-3/8 36070 40B18-1-7/16 15068 40B18-1-1/2 15070 40B19-5/8 36072 40B19-3/4 15072 40B19-7/8 36074 40B19-1 15074 40B19-1-1/8 36076 40B19-1-3/16 15076 40B19-1-1/4 36078 40B19-1-3/8 36080 40B19-1-7/16* 40B19-1-1/2* 56734 40B20-5/8 36082 40B20-3/4 15080 40B20-7/8 15082 40B20-1 15084 40B20-1-1/8 15086 40B20-1-3/16 15088 40B20-1-1/4 15090 40B20-1-3/8 36084 40B20-1-7/16 15092 40B20-1-1/2 15094 40B21-5/8 36086 40B21-3/4 17148 40B21-7/8 15096 40B21-1 15098 40B21-1-1/8 36088 40B21-1-3/16 15100 40B21-1-1/4 36090 40B21-1-3/8 36092 40B21-1-7/16* 40B21-1-1/2* 15104
40B16
15698
40B17
15700
40B18
15702
.284 MAX.
P.D.
40B19
H
15704 MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.469”
STANDARD TOLERANCES Dimension Tolerance
15078
Bore 40B20
All
±.001
15706
Reference Pages
40B21
15708
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyways. Sprockets 16-17 teeth have 1/4-20 setscrews, 18-21 teeth 5/16-18 setscrews, located over keyway, except at 90° where marked.
15102
Boston Gear 800-825-6544
275
Roller Chain Sprockets Single Strand No. 40 1/2" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Item Catalog Item Teeth Bore Catalog Number Code Number Code TYPE B SINGLE HUB STEEL
22
.284 MAX.
23
3.513
3.672
P.D.
H
24
3.831
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.469”
STANDARD TOLERANCES Dimension Tolerance
Bore
All
±.001
25
3.989
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317
26
4.148
*All sprockets have standard keyways. All sprockets have 5/16-18 setscrews located over keyway, except at 90° where marked. 27
276
Boston Gear 800-825-6544
4.307
5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2
2-7/8
3
3-1/4
3-1/4
3-1/4
3-1/4
1
1
1
1
1
1
40B22-5/8 40B22-3/4 40B22-7/8 40B22-1 40B22-1-1/8 40B22-1-3/16 40B22-1-1/4 40B22-1-3/8 40B22-1-7/16 40B22-1-1/2 40B23-5/8 40B23-3/4 40B23-7/8 40B23-1 40B23-1-1/8 40B23-1-3/16 40B23-1-1/4 40B23-1-3/8 40B23-1-7/16 40B23-1-1/2 40B24-5/8 40B24-3/4 40B24-7/8 40B24-1 40B24-1-1/8 40B24-1-3/16 40B24-1-1/4 40B24-1-3/8 40B24-1-7/16 40B24-1-1/2 40B25-5/8 40B25-3/4 40B25-7/8 40B25-1 40B25-1-1/8 40B25-1-3/16 40B25-1-1/4 40B25-1-7/16 40B25-1-1/2 40B26-5/8 40B26-3/4 40B26-7/8 40B26-1 40B26-1-1/8 40B26-1-3/16 40B26-1-1/4 40B26-1-7/16 40B26-1-1/2 40B27-5/8 40B27-3/4 40B27-7/8 40B27-1 40B27-1-1/8 40B27-1-3/16 40B27-1-1/4 40B27-1-7/16 40B27-1-1/2
36094 15106 36096 15108 15110 15112 15114 36098 15116 56735 36102 15118 36104 15120 36106 15122 15124 36108 15126 56736 36110 15128 36112 15130 15132 15134 15136 36114 15138 15140 36116 15142 36118 15144 36120 36122 15146 36124 15148 36126 68293 68294 68295 68296 68297 68298 68299 68300 36128 68301 68302 68303 68304 68305 68306 68307 68308
40B22
15710
40B23
15712
40B24
15714
40B25
15716
40B26
68089
40B27
68090
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 40 1/2" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE With Keyway Without Keyway No. Pitch Hub Length and Setscrew* and Setscrew Bore of thru Dia. Dia. Catalog Item Catalog Item Teeth Bore Number Code Number Code TYPE B SINGLE HUB STEEL
28
4.466
30
4.783
32
5.101
35
5.578
36
5.738
38 40
6.055 6.373
42
45
6.691
7.168
48
7.645
54
8.599
60
9.554
72 84 96 112
11.463 13.372 15.282 17.828
P-1930-BG
04/10
5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 5/8 5/8 3/4 1 1-1/4 1-7/16 1-1/2 3/4 1 1-1/4 1-7/16 1-1/2 5/8 3/4 3/4 1 1-1/4 1-7/16 1-1/2 3/4 1 1-1/4 1-7/16 1-1/2 3/4 1 1-1/4 1-7/16 1-1/2 3/4 1 1-1/4 1-7/16 1-1/2 3/4 3/4 1 1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4
1
3-1/4 3-1/2
1 1-1/8
3-1/2
3-1/2
1-1/8
1-1/8
3-1/2
1-1/8
3-1/2
1-1/8
3-1/2
1-1/8
4 4 4 4
1-1/4 1-1/4 1-1/4 1-1/4
40B28-5/8 40B28-3/4 40B28-7/8 40B28-1 40B28-1-1/8 40B28-1-3/16 40B28-1-1/4 40B28-1-7/16 40B28-1-1/2 40B30-5/8 40B30-3/4 40B30-7/8 40B30-1 40B30-1-1/8 40B30-1-3/16 40B30-1-1/4 40B30-1-7/16 40B30-1-1/2 — 40B35-5/8 40B35-3/4 40B35-1 40B35-1-1/4 40B35-1-7/16 40B35-1-1/2 40B36-3/4 40B36-1 40B36-1-1/4 40B36-1-7/16 40B36-1-1/2 — — 40B42-3/4 40B42-1 40B42-1-1/4 40B42-1-7/16 40B42-1-1/2 40B45-3/4 40B45-1 40B45-1-1/4 40B45-1-7/16 40B45-1-1/2 40B48-3/4 40B48-1 40B48-1-1/4 40B48-1-7/16 40B48-1-1/2 — 40B60-1 40B60-1-1/4 40B60-1-7/16 40B60-1-1/2 — — — —
36130 68309 68310 68311 68312 68313 68314 68315 68316 36134 68325 68326 68327 68328 68329 68330 68331 68332 — 36186 36188 36190 36192 36194 36196 49478 36200 45979 45980 45981 — — 49479 36264 36266 36268 36270 49480 36298 36300 36302 36304 49481 36330 36332 36334 36336 — 36470 36472 36474 36476 — — — —
40B28
68091
40B30
16434
.284 MAX. 40B32 40B35
16436 68096
P.D.
H 40B36
16438 MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.469”
40B38 40B40 40B42
68098 16440 16442
STANDARD TOLERANCES Dimension
Bore 40B45
All
Tolerance
±.001
16444
Reference Pages 40B48
16446
40B54 40B60
16448 16450
40B72 40B84 40B96 40B112
16454 16458 16460 16462
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyways. All sprockets have 5/16-18 setscrews located over keyway.
Boston Gear 800-825-6544
277
Roller Chain Sprockets Single Strand No. 40 1/2" Pitch; Stainless Steel ORDER BY CATALOG NUMBER OR ITEM CODE Without Keyway No. or Setscrew of Pitch Bore Hub Length Catalog Item Teeth Dia. Dia. thru Number Code TYPE B SINGLE HUB STAINLESS STEEL
.284 MAX.
P.D.
10 11 12 13 14 15 16 17 18 19 20 25 30 40 45 60
1.618 1.775 1.932 2.089 2.247 2.405 2.563 2.721 2.879 3.038 3.196 3.989 4.783 6.373 7.168 9.554
1-1/4† 1-3/8† 1-9/16† 1-9/16 1-11/16 1-13/16 2 2-1/8 2-5/16 2-1/2 2-5/8 3-1/4 3-1/4 3-1/2 3-1/2 3-1/2
1/2
5/8
5/8
3/4
7/8
7/8
1
1
40B10SS 40B11SS 40B12SS 40B13SS 40B14SS 40B15SS 40B16SS 40B17SS 40B18SS 40B19SS 40B20SS 40B25SS 40B30SS 40B40SS 40B45SS 40B60SS
69275 69276 69277 69278 69279 69280 69281 69282 69283 69294 69295 69296 69297 69300 69301 69302
†Has recessed groove in hub for chain reference.
H
Double Strand No. 40 2-1/2" Pitch; Steel
.841 .395 P.D.
.275 MAX
ORDER BY CATALOG NUMBER OR ITEM CODE Without Keyway No. or Setscrew of Pitch Bore Hub Length Catalog Item Teeth Dia. Dia. thru Number Code TYPE B SINGLE HUB STEEL
13 14 15 16 17 18 19 20 21 22 23 24 25 26 30 35 36 40
2.089 2.247 2.405 2.563 2.721 2.879 3.038 3.196 3.355 3.513 3.672 3.831 4.989 4.148 4.783 5.578 5.737 6.373
5/8
7/8 15/16
STANDARD TOLERANCES Dimension
Boston Gear 800-825-6544
1/2
1-1/2 1-11/16 1-13/126 2 2-1/8 2-5/16 2-1/2 2-5/8 2-3/4 2-7/8 3 3-1/4 3-1/4 3-1/4 2-1/2 3-1/4 3-3/4 3-3/4
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. +.469”
Stainless Steel Bore All Double Strand Bore All
278
1/2
Tolerance +.002 —.000
1-1/2 1-1/2
1-5/8
1-5/8 1-5/8 1-3/4
D40B13 D40B14 D40B15 D40B16 D40B17 D40B18 D40B19 D40B20 D40B21 D40B22 D40B23 D40B24 D40B25 D40B26 D40B30 D40B35 D40B36 D40B40
46563 46564 46565 15950 15952 15954 15956 15958 15960 15962 15964 15966 15968 68011 68012 68013 68018 68020
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317
±,001
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 50 5/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Catalog Number
Bore
Item Code
TYPE A NO HUB STEEL 17 3.401 50A17 18 3.599 5/8 50A18 19 3.797 50A19 20 3.955 50A20 21 4.193 3/4 50A21 22 4.392 50A22 23 4.590 50A23 24 4.788 50A24 25 4.987 50A25 26 5.185 50A26 28 5.582 50A28 30 5.979 50A30 32 6.376 23/32 50A32 35 6.872 50A35 36 7.171 50A36 40 7.966 50A40 42 8.363 50A42 45 8.960 50A45 48 9.556 50A48 54 10.749 50A54 60 11.942 50A60 72 14.328 15/16 50A72 84 16.715 50A84 96 19.102 50A96 112 21.885 50A112 ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Catalog Item Bore Number Code
45865 56752 56753 56754 56755 56756 56757 56758 16288 45866 45867 16290 16292 45872 16294 16296 16298 16300 16302 16304 16306 16310 16314 16316 16318
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL 8
1.633
9
1.827
10
2.023
11
12
13
14
P-1930-BG
2.218
2.415
2.612
2.809
04/10
5/8 5/8 3/4 5/8 3/4 7/8 1 5/8 3/4 7/8 1 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4
1-1/8†
1
1-3/8†
1
1-9/16†
1
1-3/4†
1-63/64†
1-7/8
2-1/8
1
1
1
1
50B8-5/8* 50B9-5/8 50B9-3/4* 50B10-5/8 50B10-3/4 50B10-7/8 50B10-1* 50B11-5/8 50B11-3/4 50B11-7/8 50B11-1* 50B12-5/8 50B12-3/4 50B12-7/8 50B12-1 50B12-1-1/8 50B12-1-3/16 50B12-1-1/4* 50B13-5/8 50B13-3/4 50B13-7/8 50B13-1 50B13-1-1/8* 50B13-1-3/16 50B13-1-1/4* 50B14-5/8 50B14-3/4 50B14-7/8 50B14-1 50B14-1-1/8 50B14-1-3/16 50B14-1-1/4*
49482 15150 15152 15154 15156 36496 36498 15158 15160 15162 15164 15166 15168 15170 15172 15174 36500 36502 36504 15176 15178 15180 15182 15184 15186 36506 15188 15190 15192 15194 15196 15198
50B8 50B9
15798 15800
50B10
15802
50B11
15804
50B12
50B13
TYPE A
TYPE B
.343 MAX.
.343 MAX.
P.D.
P.D.
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .594” STANDARD TOLERANCES Dimension Tolerance Type A Bore All ±.002 –.001 Type B Bore All ±.001
Reference Pages
15806
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317
15808
*All sprockets have standard keyway. Sprockets 8-12 teeth have 1/4–20 setscrew, 13-14 teeth 5/16-18 setscrew located over keyway except at 90° where marked. †Has recessed groove in hub for chain clearance.
50B14
15810
Boston Gear 800-825-6544
279
H
Roller Chain Sprockets Single Strand No. 50 5/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
15
3.006
.343 MAX. 16
3.204
P.D.
H
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .594”
17
3.401
STANDARD TOLERANCES Dimension Bore
Tolerance All
±.001
Reference Pages
18
3.599
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 5/16–18 setscrews located over keyway except at 90° where marked.
19
20
280
Boston Gear 800-825-6544
3.797
3.995
5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8
2-3/8
2-1/2
2-11/16
2-7/8
3
3
1
1
1
1
1
1
50B15-5/8 50B15-3/4 50B15-7/8 50B15-1 50B15-1-1/8 50B15-1-3/16 50B15-1-1/4 50B15-1-3/8 50B15-1-7/16* 50B15-1-1/2* 50B16-5/8 50B16-3/4 50B16-7/8 50B16-1 50B16-1-1/8 50B16-1-3/16 50B16-1-1/4 50B16-1-3/8 50B16-1-7/16 50B16-1-1/2* 50B16-1-5/8* 50B17-5/8 50B17-3/4 50B17-7/8 50B17-1 50B17-1-1/8 50B17-1-3/16 50B17-1-1/4 50B17-1-3/8* 50B17-1-7/16* 50B17-1-1/2* 50B17-1-5/8* 50B18-5/8 50B18-3/4 50B18-7/8 50B18-1 50B18-1-1/8 50B18-1-3/16 50B18-1-1/4 50B18-1-1/4 50B18-1-7/16 50B18-1-1/2 50B19-5/8 50B19-3/4 50B19-7/8 50B19-1 50B19-1-1/8 50B19-1-3/16 50B19-1-1/4 50B19-1-1/4 50B19-1-7/16 50B19-1-1/2 50B20-3/4 50B20-7/8 50B20-1 50B20-1-1/8 50B20-1-3/16 50B20-1-1/4 50B20-1-1/4 50B20-1-7/16 50B20-1-1/2 50B20-1-5/8
36508 15200 15202 15204 36206 15208 15210 15212 15214 36510 36512 15216 15218 15220 15222 15224 15226 15228 15230 15232 36514 36516 15234 17150 15236 15238 15240 15242 15244 15246 56737 36518 36520 15248 15250 15252 36522 15254 15256 15258 15260 15262 36524 36526 36528 15264 15266 15268 15270 15272 15274 15276 36530 15278 15280 56738 15282 15284 15286 15288 15290 36532
50B15
15812
50B16
15814
50B17
15816
50B18
15818
50B19
15820
50B20
15833
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 50 5/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
21
22
23
24
25
26
28
30
P-1930-BG
4.193
4.392
4.590
4.788
4.987
5.185
5.582
5.979
04/10
3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2 3/4 1 1-1/8 1-3/16 1-1/4 1-7/16 1-1/2
3
3
3
3
3
3
3
3
1
1
1
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
50B21-3/4 50B21-1 50B21-1-1/8 50B21-1-3/16 50B21-1-1/4 50B21-1-3/8 50B21-1-7/16 50B21-1-1/2 50B22-3/4 50B22-1 50B22-1-1/8 50B22-1-3/16 50B22-1-1/4 50B22-1-3/8 50B22-1-7/16 50B22-1-1/2 50B23-3/4 50B23-1 50B23-1-1/8 50B23-1-3/16 50B23-1-1/4 50B23-1-3/8 50B23-1-7/16 50B23-1-1/2 50B24-3/4 50B24-1 50B24-1-1/8 50B24-1-3/16 50B24-1-1/4 50B24-1-3/8 50B24-1-7/16 50B24-1-1/2 50B25-3/4 50B25-1 50B25-1-1/8 50B25-1-3/16 50B25-1-1/4 50B25-1-3/8 50B25-1-7/16 50B25-1-1/2 50B26-3/4 50B26-1 50B26-1-1/8 50B26-1-3/16 50B26-1-1/4 50B26-1-7/16 50B26-1-1/2 50B28-3/4 50B28-1 50B28-1-1/8 50B28-1-3/16 50B28-1-1/4 50B28-1-7/16 50B28-1-1/2 50B30-3/4 50B30-1 50B30-1-1/8 50B30-1-3/16 50B30-1-1/4 50B30-1-7/16 50B30-1-1/2
36536 15292 36540 36538 15294 36542 56739 15296 36546 15300 36548 36550 15302 36552 36554 15304 36558 15308 36560 36562 15310 36564 36566 15312 36570 15316 36572 36574 15318 36576 36578 15320 36582 36584 36586 36588 36590 36592 36594 36596 36602 36604 36606 36608 36610 36612 36614 36638 36640 36642 36644 36646 36648 36650 36674 36676 36678 36680 36682 36684 36686
50B21
15824
50B22
15826
.343 MAX. 50B23
15828
P.D.
50B24
H
15830
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .594” STANDARD TOLERANCES 50B25
15832
Dimension Bore
All
Tolerance ±.001
Reference Pages 50B26
36598
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317
50B28
36630
*All sprockets have standard keyway. All sprockets have 5/16–18 setscrews located over keyway except at 90° where marked.
50B30
16488
Boston Gear 800-825-6544
281
Roller Chain Sprockets Single Strand No. 50 5/8" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Hub Dia.
Bore
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
.343 MAX.
32
6.376
35
6.972
36
7.171
40
7.966
42
8.363
45
8.960
48
9.556
54
10.749
60
11.942
72 84 96 112
14.328 16.715 19.102 21.885
P.D.
H
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 5/16–18 setscrews located over keyway except at 90° where marked.
Double Strand
3/4 — 3/4 1 1-1/4 1-7/16 1-1/2 3/4 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 1 1-1/4 1-7/16 1-1/2 1-15/16 1 1 1-1/4 1-7/16 1-1/2 1-15/16 1 1 1 1
3-1/4
1-1/4
3-1/4
1-1/4
3-1/4
1-1/4
3-1/4
1-1/4
3-1/4
1-1/4
3-3/4
1-1/4
3-3/4
1-1/4
3-3/4
1-1/4
3-3/4
1-1/4
3-3/4 4-1/4 4-1/4 4-1/4
1-3/4 1-3/4 1-3/4 1-3/4
— — — — 50B35-3/4 36748 50B35-1 36750 50B35-1-1/4 36752 50B35-1-7/16 36754 50B35-1-1/2 36756 — — 50B40-3/4 36808 50B40-1 36810 50B40-1-1/4 36812 50B40-1-7/16 36814 50B40-1-1/2 36816 50B40-1-15/16* 36818 — — 50B45-3/4 36876 50B45-1 36878 50B45-1-1/4 36880 50B45-1-7/16 36882 50B45-1-1/2 36884 50B45-1-15/16* 36886 50B48-1 36892 50B48-1-1/4 36894 50B48-1-7/16 36896 50B48-1-1/2 36898 50B48-1-15/16* 35942 — — 50B60-1 35920 50B60-1-1/4 35922 50B60-1-7/16 35924 50B60-1-1/2 35926 50B60-1-15/16* 35928 — — — — — — — —
50B32 — 50B35
16490 — 36744
50B36 50B40
16490 16494
50B42 50B45
16496 16498
50B48
16500
50B54 50B60
16502 16504
50B72 50B84 50B96 50B112
16508 16512 16514 16516
ORDER BY CATALOG NUMBER OR ITEM CODE
No. 50-2 5/8" Pitch; Steel No. of Teeth
Pitch Dia.
Bore
Hub Dia.
Length thru Bore
With Keyway & Setscrew* Catalog Item Number Code
TYPE B SINGLE HUB STEEL
1.045 .500
P.D.
15 16 17 18 20 21 22 24 25 30 40
3.006 3.204 3.401 3.599 3/995 4.193 4.392 4.788 4.987 5.979 7.966
3/4
1
1 1-3/16
STANDARD TOLERANCES .332 MAX
282
Boston Gear 800-825-6544
Dimension Bore
Tolerance All ±.001
2-5/16 2-1/2 2-11/16 2-15/16 3-1/4 3-1/2 3-9/16 3-5/8 3-5/8 3-3/4 4
1-3/4
1-3/4
1-7/8 2-1/8
D50B15 D50B16 D50B17 D50B18 D50B20 D50B21 D50B22 D50B24 D50B25 D50B30 D50B40
15970 15972 15974 15976 15980 15982 15984 15988 15990 68166 68173
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .594”
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 60 3/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
TYPE A NO HUB STEEL 17 4.082 18 4.319 19 4.557 20 4.794 21 5.032 22 5.270 23 5.508 24 5.746 25 5.984 26 6.222 28 6.699 30 7.175 32 7.652 35 8.367 36 8.605 40 9.559 45 10.752 48 11.467 54 12.899 60 14.330 72 17.194
3/4
23/32
15/16
1-1/4
Catalog Number
Item Code
60A17 60A18 60A19 60A20 60A21 60A22 60A23 60A24 60A25 60A26 60A28 60A30 60A32 60A35 60A36 60A40 60A45 60A48 60A54 60A60 60A72
56759 56760 56761 56762 16320 16322 16324 16326 16328 61894 46466 16330 16332 46471 16334 16336 16340 16342 16344 16346 16350
TYPE A
TYPE B
.459 MAX.
.575 MAX.
P.D.
P.D.
ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL 8 9
1.960 2.193
10
2.023
11
12
13
14
P-1930-BG
2.662
2.898
3.134
3.370
04/10
5/8 3/4 3/4 7/8 1 1-1/8 1-3/16 1-3/4 3/4 7/8 1 1-1/8 1-3/16 1-3/4 3/4 7/8 1 1-1/8 1-3/16 1-3/4 1-7/16 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8
1-15/32† 1-9/16† 1-9/16†
2-1/16†
2-3/8†
2-11/32
2-9/16
1-1/4 60B8-3/4* 1-1/4 60B9-3/4* 60B10-3/4 60B10-7/8 1-1/4 60B10-1 60B10-1-1/8* 60B10-1-3/16* 60B10-1-1/4* 60B11-3/4 60B11-7/8 1-1/4 60B11-1 60B11-1-1/8* 60B11-1-3/16* 60B11-1-1/4* 60B12-3/4 60B12-7/8 60B12-1 1-1/4 60B12-1-1/8 60B12-1-3/16 60B12-1-1/4 60B12-1-7/16* 60B13-3/4 60B13-7/8 60B13-1 60B13-1-1/8 1-1/4 60B13-1-3/16 60B13-1-1/4 60B13-1-3/8 60B13-1-7/16* 60B13-1-1/2* 60B14-3/4 60B14-7/8 60B14-1 60B14-1-1/8 60B14-1-3/16 1-1/4 60B14-1-1/4 60B14-1-3/8 60B14-1-7/16 60B14-1-1/2 60B14-1-9/16* 60B14-1-5/8*
49483 15324 15326 36180 15328 36182 36184 36162 15334 36164 15332 56740 36494 15330 15336 36616 15338 15340 15342 15344 36618 15346 36620 15348 15350 15352 15354 15356 15358 15360 15362 36144 15364 36146 15366 15368 15370 15372 15374 36148 36150
60B8 60B9 60B10
15834 15836 15838
H MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .703”
STANDARD TOLERANCES Dimension 60B11
15840
Type A Type B
Bore Bore
Tolerance All All
±.002 –.001 ±.001
Reference Pages 60B12
15842
60B13
15844
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 1/4–20 setscrew, 9 to 12 tooth sprockets have 5/16–18 setscrew and 13 and 14 tooth sprockets have 3/8–16 setscrew, located over keyway except at 90° where marked.
60B14
15846
†Has recessed groove in hub for chain clearance.
Boston Gear 800-825-6544
283
Roller Chain Sprockets Single Strand No. 60 3/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
15
3.607
.459 MAX.
16
P.D.
H
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .703”
17
3.844
4.082
STANDARD TOLERANCES Dimension Bore
All
Tolerance ±.001
Reference Pages
18
4.319
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway except at 90° where marked.
284
Boston Gear 800-825-6544
19
4.557
3/4 7/8 1 1-1/8 1-3/16 1-1/4 2-7/8 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 3/4 7/8 1 1-1/8 1-3/16 1-1/4 1-3/8 3-1/16 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 1-15/16 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 3-1/4 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 3-1/2 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 3-1/2 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 1-15/16
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
60B15-3/4 60B15-7/8 60B15-1 60B15-1-1/8 60B15-1-3/16 60B15-1-1/4 60B15-1-3/8 60B15-1-7/16 60B15-1-1/2 60B15-1-9/16 60B15-1-5/8 60B15-1-3/4 60B16-3/4 60B16-7/8 60B16-1 60B16-1-1/8 60B16-1-3/16 60B16-1-1/4 60B16-1-3/8 60B16-1-7/16 60B16-1-1/2 60B16-1-9/16 60B16-1-5/8 60B16-1-3/4 60B16-1-15/16 60B17-3/4 60B17-1 60B17-1-1/8 60B17-1-3/16 60B17-1-1/4 60B17-1-3/8 60B17-1-7/16 60B17-1-1/2* 60B17-1-9/16* 60B17-1-5/8* 60B17-1-3/4* 60B18-3/4 60B18-1 60B18-1-1/8 60B18-1-3/16 60B18-1-1/4 60B18-1-3/8 60B18-1-7/16 60B18-1-1/2 60B18-1-9/16 60B18-1-5/8 60B18-1-3/4 60B19-3/4 60B19-1 60B19-1-1/8 60B19-1-3/16 60B19-1-1/4 60B19-1-3/8 60B19-1-7/16 60B19-1-1/2 60B19-1-9/16 60B19-1-5/8 60B19-1-3/4 60B19-1-15/16
36152 36154 15376 36156 15378 15380 15382 15384 15386 36158 15388 15390 36160 36166 15392 36168 15394 15396 15398 15400 15402 36170 15404 36172 15406 49484 15408 21782 21784 15410 21816 21818 15412 45666 45667 15414 49485 15416 21866 21896 15418 21906 21910 15420 21920 21924 15422 21928 15424 45656 46625 15426 45990 45657 15428 45658 45659 15430 45660
60B15
15848
60B16
15850
60B17
15852
60B18
15854
60B19
15856
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 60 3/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
20
21
22
23
24
25
26
28
30
P-1930-BG
4.794
5.032
5.270
5.508
5.746
5.984
6.222
6.699
7.175
04/10
3/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 3/4 1 1-1/4 1-7/16 1-1/2 1-15/16
3-7/8
4
4
4
4
4
4
4
4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
1-1/4
60B20-3/4 60B20-1 60B20-1-1/8 60B20-1-3/16 60B20-1-1/4 60B20-1-3/8 60B20-1-7/16 60B20-1-1/2 60B20-1-9/16 60B20-1-5/8 60B20-1-3/4 60B20-1-15/16 60B21-3/4 60B21-1 60B21-1-1/4 60B21-1-7/16 60B21-1-1/2 60B21-1-15/16 60B22-3/4 60B22-1 60B22-1-1/4 60B22-1-7/16 60B22-1-1/2 60B22-1-15/16 60B23-3/4 60B23-1 60B23-1-1/4 60B23-1-7/16 60B23-1-1/2 60B23-1-15/16 60B24-3/4 60B24-1 60B24-1-1/4 60B24-1-7/16 60B24-1-1/2 60B24-1-15/16 60B25-3/4 60B25-1 60B25-1-1/4 60B25-1-7/16 60B25-1-1/2 60B25-1-15/16 60B26-3/4 60B26-1 60B26-1-1/4 60B26-1-7/16 60B26-1-1/2 60B26-1-15/16 60B28-3/4 60B28-1 60B28-1-1/4 60B28-1-7/16 60B28-1-1/2 60B28-1-15/16 60B30-3/4 60B30-1 60B30-1-1/4 60B30-1-7/16 60B30-1-1/2 60B30-1-15/16
46576 17152 46577 45661 15432 46578 45662 15434 45663 45664 15436 46579 20034 20040 20132 20142 20846 20858 21550 21570 45669 45688 45689 45690 45744 45691 45698 45699 45700 45702 36020 45703 45704 45705 45706 45707 36022 45745 45711 45712 45713 45714 36024 45746 45715 45716 45717 45718 36030 45721 45722 45734 45735 45736 36036 45738 45749 45765 45795 45775
60B20
15858
60B21
15860
60B22
15862
.459 MAX.
P.D. 60B23
15864
60B24
15866
60B25
15868
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .703”
STANDARD TOLERANCES
60B26
Dimension Bore
All
Tolerance ±.001
45747
Reference Pages
60B28
45720
60B30
16518
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway except at 90° where marked.
Boston Gear 800-825-6544
285
H
Roller Chain Sprockets Single Strand No. 60 3/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Hub Dia.
Bore
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
32
.459 MAX.
7.652
35
8.367
36
8.605
40
9.559
P.D.
45
10.752
48 54
11.467 12.899
60
14.330
72
17.194
Reference Pages
H
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway.
3/4 1 1-1/4 1-7/16 1-1/2 1-15/16 — 1 1-1/4 1-7/16 1-1/2 1-15/16 1 1-3/16 1-1/4 1-7/16 1-1/2 1-15/16 2-7/16 1-3/16 1-1/4 1-7/16 1-1/2 1-15/16 2-7/16 1-3/16 1-3/16 1-3/16 1-7/16 1-1/2 1-15/16 2-7/16 1-1/4
4
1-1/4
4
1-1/4
4
1-1/4
4-1/4
1-1/4
4-1/4
1-1/4
4-1/4 4-1/4
1-1/4 1-3/4
4-1/4
1-3/4
4-1/4
2
60B32-3/4 60B32-1 60B32-1-1/4 60B32-1-7/16 60B32-1-1/2 60B32-1-15/16 — 60B35-1 60B35-1-1/4 60B35-1-7/16 60B35-1-1/2 60B35-1-15/16 — 60B40-1-3/16 60B40-1-1/4 60B40-1-7/16 60B40-1-1/2 60B40-1-15/16 60B40-2-7/16 60B45-1-3/16 60B45-1-1/4 60B45-1-7/16 60B45-1-1/2 60B45-1-15/16 60B45-2-7/16 — — — 60B60-1-7/16 60B60-1-1/2 60B60-1-15/16 60B60-2-7/16 —
49486 49847 49488 49489 49490 49491 — 45779 45780 45793 45784 45796 — 45843 45844 45845 45846 45848 45849 61668 61673 46463 61677 61679 61680 — — — 46464 46465 61869 61870 —
60B32
16520
— 60B35
— 45778
60B36 60B40
16522 16524
60B45
16528
60B48 60B54 60B60
16530 16532 16534
60B72
16538
Double Strand No. 60 2-3/4" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Hub Dia.
Bore
Length thru Bore
Without Keyway & Setscrew* Catalog Item Number Code
TYPE B SINGLE HUB STEEL
1.341 .580
15 16 17 18 19 20 21 25
3.607 3.844 4.082 4.319 4.557 4.794 5.032 5.984
1
2-13/16 3 3-1/4 3-1/2 3-11/16 3-3/4 4-1/8 4-1/4
2-1/8
D60B15 D60B16 D60B17 D60B18 D60B19 D60B20 D60B21 D60B25
15992 15994 15996 15998 16000 16002 16004 16006
STANDARD TOLERANCES
P.D.
Dimension Bore
All
Tolerance ±.001
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .703”
.444 MAX
286
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 80 1" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
TYPE A NO HUB STEEL 16 5.126 17 5.442 18 5.759 19 6.079 20 6.392 21 6.710 22 7.027 23 7.344 24 7.661 25 7.979 26 8.296 30 9.567 36 11.474 40 12.745 48 15.290 50 15.926 60 19.107
15/16
1-3/16
1-1/4
Catalog Number
Item Code
80A16 80A17 80A18 80A19 80A20 80A21 80A22 80A23 80A24 80A25 80A26 80A30 80A36 80A40 80A48 80A54 80A60
16356 16358 16360 16362 16364 16366 16368 16370 16372 16374 16376 16378 16382 16384 16388 46555 16392
TYPE A
TYPE B
.575 MAX.
.575 MAX.
ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
P.D.
P.D.
TYPE B SINGLE HUB STEEL 8
2.613
9
2.924
10
3.236
11
12
3.549
3.864
1 1 1-1/8 1-3/16 1-1/4 1 1-1/8 1-3/16 1-1/4 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1 1-1/8 1-3/16 1-1/4 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4
1-15/16 2-1/4†
2-9/16†
2-13/16†
3-1/8†
1-5/8 80B8-1* 80B9-1* 1-5/8 80B9-1-1/8* 80B9-1-3/16* 80B9-1-1/4* 80B10-1 1-5/8 80B10-1-1/8 80B10-1-3/16 80B10-1-1/4 80B11-1 80B11-1-1/8 80B11-1-3/16 80B11-1-1/4 1-5/8 80B11-1-3/8 80B11-1-7/16 80B11-1-1/2* 80B11-1-9/16* 80B11-1-5/8* 80B12-1 80B12-1-1/8 80B12-1-3/16 80B12-1-1/4 1-5/8 80B12-1-3/8 80B12-1-7/16 80B12-1-1/2 80B12-1-9/16 80B12-1-5/8 80B12-1-3/4
46489 46490 46491 15438 46492 15440 46493 46494 15442 46495 46496 15444 15446 63651 15448 15450 46497 15452 63653 63654 63655 15454 63656 15456 15458 63657 15460 15462
80B8 80B9
H
15870 15872
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .875” 80B10
15874 STANDARD TOLERANCES
80B11
15876
Dimension Type A Bore Type B Bore
All All
Tolerance ±.002 –.001 ±.001
Reference Pages 80B12
15878
Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway except at 90° where marked. †Has recessed groove in hub for chain clearance.
P-1930-BG
04/10
Boston Gear 800-825-6544
287
Roller Chain Sprockets Single Strand No. 80 1" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Dia.
Bore
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
13
4.179
.575 MAX.
P.D.
H
14
4.494
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .875”
STANDARD TOLERANCES Dimension Bore
All
15
4.810
Tolerance ±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway. †Has recessed groove in hub for chain clearance.
288
Boston Gear 800-825-6544
16
17
5.126
5.442
1 80B13-1 63658 1-1/8 80B13-1-1/8 63659 1-3/16 80B13-1-3/16 63662 1-1/4 80B13-1-1/4 15464 1-3/8 80B13-1-3/8 63664 1-7/16 80B13-1-7/16 15466 1-1/2 3 1-1/2 80B13-1-1/2 15468 1-9/16 80B13-1-9/16 63666 1-5/8 80B13-1-5/8 15470 1-3/4 80B13-1-3/4 15472 1-7/8 80B13-1-7/8 63667 1-15/16 80B13-1-15/16 15474 2 80B13-2 15476 1 80B14-1 63669 1-1/8 80B14-1-1/8 63670 1-3/16 80B14-1-3/16 63708 1-1/4 80B14-1-1/4 15478 1-3/8 80B14-1-3/8 63709 1-7/16 3-1/4 1-1/2 80B14-1-7/16 15480 1-1/2 80B14-1-1/2 15482 1-9/16 80B14-1-9/16 63710 1-5/8 80B14-1-5/8 15484 1-3/4 80B14-1-3/4 15486 1-7/8 80B14-1-7/8 63711 1-15/16 80B14-1-15/16 15488 1 80B15-1 63712 1-1/8 80B15-1-1/8 46498 1-3/16 80B15-1-3/16 46499 1-1/4 80B15-1-1/4 15492 1-7/16 80B15-1-7/16 15494 1-1/2 3-13/16 1-1/2 80B15-1-1/2 15496 1-9/16 80B15-1-9/16 63725 1-5/8 80B15-1-5/8 15498 1-3/4 80B15-1-3/4 15500 1-7/8 80B15-1-7/8 63726 1-15/16 80B15-1-15/16 15502 2 80B15-2 15504 1 80B16-1 35932 1-1/4 80B16-1-1/4 63734 1-3/8 80B16-1-3/8 63735 1-7/16 80B16-1-7/16 63736 1-1/2 4 1-1/2 80B16-1-1/2 63737 1-9/16 80B16-1-9/16 63738 1-5/8 80B16-1-5/8 46500 1-3/4 80B16-1-3/4 46501 1-15/16 80B16-1-15/16 63765 1 80B17-1 63775 1-1/4 80B17-1-1/4 63776 1-3/8 80B17-1-3/8 63777 1-7/16 80B17-1-7/16 46502 1-1/2 4 1-1/2 80B17-1-1/2 46503 1-9/16 80B17-1-9/16 46504 1-5/8 80B17-1-5/8 46505 1-3/4 80B17-1-3/4 46506 1-15/16 80B17-1-15/16 46507
80B13
15880
80B14
15882
80B15
15884
80B16
15886
80B17
15888
P-1930-BG
04/10
Roller Chain Sprockets Single Strand No. 80 1" Pitch; Steel ORDER BY CATALOG NUMBER OR ITEM CODE No. of Teeth
Pitch Bore Diameter
Hub Dia.
With Keyway Length & Setscrew* thru Item Bore Catalog Number Code
Without Keyway or Setscrew Catalog Item Number Code
TYPE B SINGLE HUB STEEL
18
19
20
21 22 23 24 25 26 30 36 40 48 60
5.759
6.076
6.076
6.710 7.027 7.344 7.661 7.979 8.296 9.567 11.474 12.745 15.290 19.107
1 1-1/4 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 1-15/16 2 1 1-1/4 1-7/16 1-1/2 1-5/8 1-3/4 1-15/16 2 2-7/16 1 1-1/4 1-7/16 1-1/2 1-5/8 1-3/4 1-15/16 2 2-7/16 1 1 1 1 1 1-1/4 1-3/16 1-3/16 1-3/16 1-1/4 1-1/4
4-1/4
4-1/4
4-1/4
4-1/4 4-1/4 4-1/4 4-1/4 4-1/4 4-3/4 4-3/4 4-3/4 4-3/4 4-3/4 5-1/4
1-1/2
1-1/2
1-1/2
1-3/4 1-3/4 1-3/4 1-3/4 1-3/4 2 2 2 2 2 2
80B18-1 80B18-1-1/4 80B18-1-3/8 80B18-1-7/16 80B18-1-1/2 80B18-1-9/16 80B18-1-5/8 80B18-1-3/4 80B18-1-15/16 80B18-2 80B19-1 80B19-1-1/4 80B19-1-7/16 80B19-1-1/2 80B19-1-5/8 80B19-1-3/4 80B19-1-15/16 80B19-2 80B19-2-7/16 80B20-1 80B20-1-1/4 80B20-1-7/16 80B20-1-1/2 80B20-1-5/8 80B20-1-3/4 80B20-1-15/16 80B20-2 80B20-2-7/16 — — — — — — — — — — —
46509 46510 46511 46512 46513 63816 63820 63903 46514 63905 63911 63912 63935 63936 63951 63953 63954 63955 63956 21968 63962 63963 63964 63965 63966 63967 63969 63970 — — — — — — — — — — —
80B18
15890
80B19
15892
80B20
15892
.575 MAX.
P.D.
80B21 80B22 80B23 80B24 80B25 80B26 80B30 80B36 80B40 80B48 80B60
15896 15898 16544 16546 16548 16550 16552 16556 16558 16562 16566
MAXIMUM DIA. OF CHAIN OVER SPROCKET = SPROCKET P.D. + .875” STANDARD TOLERANCES Dimension Bore
All
Tolerance ±.001
Reference Pages Alterations – 316 Horsepower Ratings – 260-262 Lubrication – 259 Materials – 316 Selection Procedure – 258 ANSI Diameters – 317 *All sprockets have standard keyway. All sprockets have 3/8–16 setscrew, located over keyway.
P-1930-BG
04/10
Boston Gear 800-825-6544
289
H
Block Chain Sprockets Type B Single Hub for 5/16" Wide B504 Block Chain Block Chain Sprockets*; Steel and Iron ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE
Teeth
Pitch Diam.
Bore
Hub Diameter Project
Style
Catalog Number
Item Code
STEEL 6 1.94 7 2.25 8 2.57 CAST IRON 9 2.88 10 3.20 12 3.83
5/8 5/8 5/8
1-3/8 1-11/16 2
3/4 3/4 3/4
A A A
H917 H918 H919
14876 14878 14880
5/8 5/8 5/8
1-1/2 1-1/2 1-3/4
3/4 5/8 5/8
A B B
H920 H921 H922
16594 16596 16598
STANDARD TOLERANCES
.284 MAX.
P.D.
Dimension Bore
All
Tolerance ±.001 – .000
Reference Pages Alterations – 316 Materials – 316 *For Block Chain refer to Page 253.
H
290
Boston Gear 800-825-6544
P-1930-BG
04/10
Ladder Chain Sprockets Type B Single Hub Nos. 1A and 1; Bronze and Steel (All Sprockets Equipped with Standard Setscrews, Except CBA 8) ORDER BY CATALOG NUMBER OR ITEM CODE
Teeth
Pitch Diam.
Bore
Hub Diameter Project
Style
Catalog Number
Item Code
No. 1A BRONZE SPROCKETS 8 10 12 15 18 20 24 32 36
.48 .60 .71 .88 1.06 1.18 1.41 1.88 2.12
1/8 1/8 3/16 3/16 3/16 3/16 3/16 1/4 5/16
5/16† 3/8 7/16 7/16 1/2 5/8 3/4 5/8 3/4
7/32 7/32 7/32 7/32 1/4 1/4 1/4 5/16 3/8
Plain Plain Plain Plain Plain Plain Plain Plain Plain
CBA8 CBA10 CBA12 CBA15B CBA18B CBA20B CBA24B CBA32 CBA36
16856 16858 16860 16862 16864 16866 16868 16870 16872
3/16 3/16 1/4 1/4 1/4 1/4 5/16 5/16 5/16 3/8 3/8
3/8† 7/16† 1/2† 9/16† 11/16† 3/4† 7/8† 7/8 7/8 1-1/4 1-1/4
1/2 1/2 1/2 1/2 1/2 1/2 1/2 13/32 13/32 1/2 1/2
Plain Plain Plain Plain Plain Plain Plain Plain Plain Plain Plain
CA7 CA8 CA9 CA10 CA12 CA14 CA16 CA20 CA24 CA34 CA42
14780 14782 14784 14786 14788 14790 14792 14794 14796 14798 14800
BRONZE SPROCKETS 6 .57 3/16 8 .75 3/16 10 .93 3/16 11 1.01 3/16 12 1.10 3/16 14 1.28 1/4 24 2.19 5/16 32 2.92 5/16
11/32† 1/2 1/2 1/2 1/2 5/8 3/4 3/4
1/4 1/4 1/4 1/4 1/4 5/16 3/8 3/8
Plain Plain Plain Plain Plain Plain Plain Plain
CB1 6 CB1 8 CB1 10 CB1 11 CB1 12 CB1 14 CB1 24 CB1 32
16878 16880 16882 16884 16886 16890 16900 16904
STEEL SPROCKETS 7 .42 8 .48 9 .54 10 .60 12 .71 14 .83 16 .95 20 1.18 24 1.41 34 2.00 42 2.47 No. 1
.087
7/32 5/32 P.D.
H .087
3/32
P.D.
†Has Recessed Groove in Hub for Chain Clearance
STANDARD TOLERANCES Dimension Bore
All
Tolerance ±.001
.120
7/32 7/32 P.D.
P-1930-BG
04/10
Boston Gear 800-825-6544
291
Ladder Chain Sprockets Type B Single Hub Nos. 1-2 and 2-1/2; Bronze and Steel (All Sprockets Have Standard Setscrews)
Teeth
Pitch Diam.
ALL DIMENSIONS IN INCHES ORDER BY CATALOG NUMBER OR ITEM CODE Hub Catalog Bore Style Number Diameter Project
Item Code
No. 1 STEEL SPROCKETS 6 .57 7 .66 8 .75 10 .93 12 1.10 14 1.28 16 1.46 20 1.83 26 2.37 32 2.92 Nos. 2 and 2-1/2
1/4 1/4 5/16 5/16 5/16 5/16 5/16 1/2 1/2 1/2
1/2** 9/16** 11/16** 7/8** 7/8 7/8 7/8 1-3/8 1-3/8 1-3/8
1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
Plain Plain Plain Plain Plain Plain Plain Plain Plain Plain
3/16 1/4 1/4 5/16 5/16 5/16 3/8
9/16 5/8 5/8 3/4 3/4 3/4 7/8
5/16 5/16 5/16 3/8 3/8 3/8 7/16
Web Web Web Web Web Web Spoke
3/8 3/8 3/8 1/2 1/2 1/2 1/2 1/2
13/16† 15/16† 1-1/32† 1-1/4† 1-1/4 1-15/32 1-1/2 1-5/8
11/16 11/16 11/16 11/16 11/16 11/16 11/16 11/16
Plain Plain Plain Plain Plain Plain Plain Plain
C1 6 C1 7 C1 8 C1 10 C1 12 C1 14 C1 16 C1 20 C1 26 C1 32
14810 14812 14814 14818 14820 14822 14824 14826 14828 14830
CB3 10 CB3 12 CB3 16 CB3 20 CB3 22 CB3 24 CB3 45
16920 16922 16924 16926 16928 16930 16936
C3 8 C3 9 C3 10 C3 12 C3 14 C3 16 C3 20 C3 30
14842 14844 14846 14850 14852 14854 14856 14860
BRONZE SPROCKETS
.120
3/32
P.D.
10 12 16 20 22 24 45
1.14 1.36 1.81 2.26 2.48 2.70 5.06
STEEL SPROCKETS 8 .92 9 1.03 10 1.14 12 1.36 14 1.59 16 1.81 20 2.26 30 3.38
H .170
**Blind hole—3/4” deep from Hub End. †Has Recessed Groove in Hub for Chain Clearance
P.D.
STANDARD TOLERANCES Dimension Bore
All
Tolerance ±.001
3/32
170
P.D.
292
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Drive Tensioners Screw Adjustable/Spring Adjustable/Shaft Mounted Non-Adjustable (Drive Positioners) Boston Gear chain drive tensioners improve drive performance by eliminating whipping and slipping of loose chains. They reduce vibration, noise and maintenance and provide additional life to drive components. They are also suitable for flat-face and V-Belt drive systems and are provided with a grease fitting for lubricating idler bearings other than Bost-Bronz. All tensioners are constructed of structural steel and are available for use with Roller Chains up to 1-1/2” Piitch. No. 120.
Installation Instructions • Idlers should be located on the slack side of the drive chain. • Chain idlers should be run on the outside of the chain. • Idler sprockets should have at least three teeth engaged with the chain. • Idlers, when used on the outside of the drive, should be located approximately 1/3 of the center distance from the large sprocket. • Idlers, when used on the inside of the drive, should be located approximately 1/3 of the center distance from the large sprocket. • Tensioning that is too tight causes excessive wear on the chain and bearings. • Tensioning that is too loose allows chain vibration, causing loss of horsepower or wear.
H Idler Sprockets ORDER BY CATALOG NUMBER OR ITEM CODE For Use with Chain No.
Hole Diameter
35
1/2
1/2 40 7/8
1/2 41 7/8
50
7/8
7/8 60 1-1/8
80
P-1930-BG
1-1/8
04/10
No. of Teeth 12 15 18 9 12 15 12 15 18 9 12 15 15 18 12 15 18 12 15 18 12 15 18 12 15 18
Catalog Number
Item Code
35B12TI-8 35B15TI-8 35B18TI-8 40B9TI-8 40B12TI-8 40B15TI-8 40B12TI-14 40B15TI-14 40B18TI-14 41B9TI-8 41B12TI-8 41B15TI-8 41B15TI-14 41B18TI-14 50B12TI-14 50B15TI-14 50B18TI-14 60B12TI-14 60B15TI-14 60B18TI-14 60B12TI-18 60B15TI-18 60B18TI-18 80B12TI-18 80B15TI-18 80B18TI-18
48901 48902 48903 48904 48905 48906 48910 48911 48912 48907 48908 48909 48913 48914 48915 48916 48917 48918 48919 48920 48921 48922 48923 48924 48925 48926
Boston stocks a wide range of idler sprockets for use with its chain drive tensioners and positioners. In addition special sizes and configurations can be furnished to order. All idlers are equipped with Bost-Bronz, oil impregnated bushings. Grease lubrication is not recommended. Use normal relubrication procedure for oil-impregnated bearings.
Boston Gear 800-825-6544
293
Roller Chain Drive Tensioners Type LG Shaft Mounted
B
G E MAX. IDLER SHAFT
5/16"
F
This shaft-mounted tensioner is best suited for applications where it is impractical to bolt the tensioner on a frame. This tensioner can be mounted at any point on a shaft and is adjustable to any location in a 360° arc on the shaft.
J
ORDER BY CATALOG NUMBER OR ITEM CODE
D 1/4" GREASE GREASE FITTING PORT
A L
Suggested Chain Number*
COLLAR
35, 40, 41 40, 50, 60 80, 100, 120
H C K
Catalog Number
Item Code
0-LG 1-LG 2-LG
48888 48889 48890
*Single-strand chain. For multiple strand chain, use larger tensioner.
ALL DIMENSIONS IN INCHES Size
A
0-LG 1-LG 2-LG
4 6 8
B
C
D
E
F
G
H
J
K
L
7/8 3/4 .500 1 2-1/2 1-9/16 7/8 1/16 1-5/8 .500 1-1/4 1 .875 1-3/4 4 2-15/32 1-3/16 3/32 2-1/8 .875 1-1/2 1-1/4 1.125 2-7/8 5-1/2 3-21/32 1-3/8 1/8 2-3/4 1.125
Type BG
H
Screw Adjustable These Boston Gear tensioners use a screw for precise, easily adjustable tension, to provide maximum life for the sprocket and chain. These tensioners are useful on vertical drives to prevent lower sprocket disengagement and on heavy chains where slack is normally taken up by hand, while making the adjustment. With these tensioners chain take-up and tension are both controlled with the screw. Many drive systems are enclosed for safety reasons. With conventional tensioners, the enclosure must be removed for drive adjustment. With Boston tensioners adjustments can be made to the head of the screw, substantially reducing cost maintenance and drive down time. The screw is adjustable from either end of the tensioner.
H E MAX.
B P
J L
M G
K
ORDER BY CATALOG NUMBER OR ITEM CODE 5/16"
F MAX.
Suggested Chain Number*
IDLER SHAFT
C A
35, 40, 41 40, 50, 60 80, 100, 120
1/4" GREASE FITTING
D GREASE COLLAR PORT
Catalog Number
Item Code
0-BG 1-BG 2-BG
48878 48879 48880
*Single-strand chain. For multiple strand chain, use larger tensioner.
2G ADJUSTING SCREW G
ALL DIMENSIONS IN INCHES
294
Size
A
B
C
D
E
F
G
2G
H
J
K
L
M
P
Wgt.
0-BG 1-BG 2-BG
5-7/8 9 13
1-1/2 2 3
5-1/4 8-1/8 11-7/8
.500 .875 1.125
1 1-3/4 2-7/8
2-1/2 4-1/2 6
9/32 11/32 9/16
3/8 1/2 3/4
2-13/16 4 5-11/16
1-5/16 1-5/8 2-5/32
1-3/8 1-3/4 2-7/8
1-1/4 1-1/2 2
3/8 1/2 5/8
3/4 1 1-1/2
1 LB. 2-1/2 LB. 6 LB.
Boston Gear 800-825-6544
P-1930-BG
04/10
Roller Chain Drive Tensioners Type BG Spring Adjustable The Boston Gear Series 50 Tensioner is a screw-adjustable tensioner with a spring-loaded pivot arm. The arm maintains tension on the chain and automatically takes up the slack due to cycle loading or wear. It offers all the advantages of the screw adjustable tensioner plus the automatic takeup feature, which substantially reduces maintenance. The double-coil spring is loaded by turning the adjustment screw in the base of the unit, forcing the idler arm against the slack side of the chain. The Series 60 Tensioner has a spring-loaded pivot arm but does not have the screw-type adjustment. It is used in lighter applications (#35-#60 chain) when automatic take-up is desired. Since the pivot arm must be adjusted by hand, the mounting location of the tensioner is important. On both the Series 50 and 60 Tensioners, the pivot arm swings 90° from the center line in either direction, however, it must be positioned to swing in the direction of chain travel. ORDER BY CATALOG NUMBER OR ITEM CODE Suggested Chain Number*
Available Load at Idler Shaft @90°
40, 50, 60 80, 100, 120 35, 40, 41 50, 60
63 Lbs. 105 Lbs. 32.2 Lbs. 33.3 Lbs.
Catalog Number
Item Code
51-BG 52-BG 60-BG 61-BG
48883 48884 48886 48887
Series 50 dimensions B
H
L
E MAX.
M DIRECTION OF CHAIN TRAVEL
G
K
IDLER SHAFT
5/16"
*Single-strand chain. For multiple strand chain, use large tensioner.
Available load at idler shaft is the maximum amount of force on the chain developed by the spring loaded arm when deflected 90° to either side of the neutral position.
PIV AR OT M
F MAX.
J RAD
The basic spring preload is 20% of the total capability. The load curve is a straight line proportion of load to angle of deflection. Upon request, lighter springs can be supplied for all units. Heavier springs (to 150% of above capacity) can be furnished for all units except #60BG and #61BG.
D GREASE PORT COLLAR
A C
H
1/4" GREASE FITTING COIL SPRING
2G
ADJUSTING SCREW G
Depending on application, please allow a service factor for spring capacity. Springs are shot-peened for longer life. ALL DIMENSIONS IN INCHES Size
A
B
C
D
E
F
G
2G
H
J
K
L
M
Wgt.
51BG 52BG
9 13
2 3
8-1/8 11-7/8
.875 1.125
1-3/4 2-7/8
2-1/2 4
11/32 9/16
1/2 3/4
5-3/8 7-13/16
4-1/4 4-3/4
3 3-7/8
1 1-1/2
1/2 5/8
5 Lb. 10 Lb.
Series 60 Dimensions H E MAX.
F
5/16" DIRECTION OF CHAIN TRAVEL COLLAR PIVOT ARM
D K
IDLER SHAFT
B RAD.
G GREASE PORT C
A
J
COIL SPRING
ALL DIMENSIONS IN INCHES Size
A
B
C
D
E
F
G
2G
H
J
K
L
M
Wgt.
60BG 61BG
4 5-1/2
4-3/4 6
3-3/8 4-3/4
.500 .875
1 1-3/4
1-3/8 1-7/8
7-3/8 9-1/2
— —
2-7/8 4-1/4
9/32 13/32
1/4 5/16
— —
— —
2 Lb. 5 Lb.
P-1930-BG
04/10
Boston Gear 800-825-6544
295
Roller Chain Drive Tensioners Type HG Drive Positioners The Type HG is an angle-mounted positioner which can be mounted on any flat horizontal surface. Its variety of sizes provides advantages not enjoyed from competitive brands.
ORDER BY CATALOG NUMBER OR ITEM CODE Suggested Chain Number* 35, 40, 41 40, 50, 60 80, 100, 120
Catalog Number
Item Code
0-HG 1-HG 2-HG
48897 48898 48899
*Single-strand chain. For multiple strand chain, use larger tensioner. P GREASE PORT D
5/16
C A C E MAX.
M
F B J G
L H
GREASE FITTING
K O
IDLER SHAFT
H
ALL DIMENSIONS IN INCHES Size
A
B
C
D
E
F
0-HG 1-HG 2-HG
2-3/4 4 5
1/4 5/16 7/16
1 1-1/2 1-3/4
1/2 7/8 1-1/8
1 1-3/4 2-7/8
1-1/2 2-3/8 3-17/32
G
H
1-9/16 3-1/16 2-15/32 4-15/32 3-5/8 6-21/32
J
K
L
M
O
P
7/8 1-1/8 1-3/4
2 3 4
1-1/2 2 3
1--3/8 2 2-1/2
1-1/2 2-1/16 3
11/32 13/32 9/16
Type UG Drive Positioners The Type UG drive positioner is a fixed idler bracket which provides chain support. Available in a variety of sizes. Type UG positioners can be mounted on any flat, vertical surface.
P M
B J K
K
ORDER BY CATALOG NUMBER OR ITEM CODE
C A GREASE FITTING
F H
E MAX.
Suggested Chain Number*
5/16"
D
35, 40, 41 40, 50, 60 80, 100, 120
IDLER SHAFT GREASE PORT
Catalog Number
Item Code
0-UG 1-UG 2-UG
48893 48894 48895
*Single-strand chain. For multiple strand chain, use larger tensioner.
G
L
ALL DIMENSIONS IN INCHES Size
A
B
C
D
E
F
G
H
J
K
L
M
P
0-UG 1-UG 2-UG
2-3/4 4 5
1-1/2 2 3
2 3 3-1/2
1/2 7/8 1-1/8
1 1-3/4 2-7/8
1-1/2 2-3/8 3-17/32
7/16 9/16 3/4
2-3/16 3-1/4 4-25/32
3/4 1 1-1/2
1 1-1/2 1-3/4
1/4 5/16 1/2
1-3/8 2 2-1/2
11/32 13/32 9/16
296
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Section Contents SPUR GEARS Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298-299 Involute Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Diametral Pitch / Pressure Angle / Tooth Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Backlash / Undercut / Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 Lewis Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 HELICAL GEARS Nomenclature / Helix Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 Thrust Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 MITER & BEVEL GEARS Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 Mounting Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308 Tooth Strength / Thrust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309 WORMS & WORM GEARS Hand / Efficiency / Thrust Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310 Formulas / Self-Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311 COUPLING / UNIVERSAL JOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312 GENERAL INFORMATION How To Figure Horsepower & Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313 Mountings / Alterations / Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
I
Materials / Styles / Keyways & Setscrews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Sprockets, Sprocket Diameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316-318 Horsepower & Torque Capacity oOf Shafting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 Temperature Conversion Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 Equivalent Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Metric Conversion Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322 Application Classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323-324 INDEX TO CATALOG NUMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325-328
P-1930-BG
04/10
Boston Gear 800-825-6544
297
Engineering Information Spur Gears Gear Nomenclature ADDENDUM (a) is the height by which a tooth projects beyond the pitch circle or pitch line. BASE DIAMETER (Db) is the diameter of the base cylinder from which the involute portion of a tooth profile is generated. BACKLASH (B) is the amount by which the width of a tooth space exceeds the thickness of the engaging tooth on the pitch circles. As actually indicated by measuring devices, backlash may be determined variously in the transverse, normal, or axial-planes, and either in the direction of the pitch circles or on the line of action. Such measurements should be corrected to corresponding values on transverse pitch circles for general comparisons. BORE LENGTH is the total length through a gear, sprocket, or coupling bore. CIRCULAR PITCH (p) is the distance along the pitch circle or pitch line between corresponding profiles of adjacent teeth. CIRCULAR THICKNESS (t) is the length of arc between the two sides of a gear tooth on the pitch circle, unless otherwise specified. CLEARANCE-OPERATING (c) is the amount by which the dedendum in a given gear exceeds the addendum of its mating gear. CONTACT RATIO (m c) in general, the number of angular pitches through which a tooth surface rotates from the beginning to the end of contact.
I
GEAR is a machine part with gear teeth. When two gears run together, the one with the larger number of teeth is called the gear. HUB DIAMETER is outside diameter of a gear, sprocket or coupling hub. HUB PROJECTION is the distance the hub extends beyond the gear face. INVOLUTE TEETH of spur gears, helical gears and worms are those in which the active portion of the profile in the transverse plane is the involute of a circle. LONG- AND SHORT-ADDENDUM TEETH are those of engaging gears (on a standard designed center distance) one of which has a long addendum and the other has a short addendum. KEYWAY is the machined groove running the length of the bore. A similar groove is machined in the shaft and a key fits into this opening. NORMAL DIAMETRAL PITCH (P n ) is the value of the diametral pitch as calculated in the normal plane of a helical gear or worm. NORMAL PLANE is the plane normal to the tooth surface at a pitch point and perpendicular to the pitch plane. For a helical gear this plane can be normal to one tooth at a point laying in the plane surface. At such point, the normal plane contains the line normal to the tooth surface and this is normal to the pitch circle.
DEDENDUM (b) is the depth of a tooth space below the pitch line. It is normally greater than the addendum of the mating gear to provide clearance.
NORMAL PRESSURE ANGLE (øn) in a normal plane of helical tooth.
DIAMETRAL PITCH (P) is the ratio of the number of teeth to the pitch diameter.
OUTSIDE DIAMETER (Do) is the diameter of the addendum (outside) circle.
FACE WIDTH (F) is the length of the teeth in an axial plane. FILLET RADIUS (rf) is the radius of the fillet curve at the base of the gear tooth. FULL DEPTH TEETH are those in which the working depth equals 2.000 divided by the normal diametral pitch.
298
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Spur Gears Gear Nomenclature (Continued) ROOT DIAMETER (Dr) is the diameter at the base of the tooth space.
PITCH CIRCLE is the circle derived from a number of teeth and a specified diametral or circular pitch. Circle on which spacing or tooth profiles is established and from which the tooth proportions are constructed.
PRESSURE ANGLE—OPERATING (ør) is determined by the center distance at which the gears operate. It is the pressure angle at the operating pitch diameter.
PITCH CYLINDER is the cylinder of diameter equal to the pitch circle.
TIP RELIEF is an arbitrary modification of a tooth profile whereby a small amount of material is removed near the tip of the gear tooth.
PINION is a machine part with gear teeth. When two gears run together, the one with the smaller number of teeth is called the pinion.
UNDERCUT is a condition in generated gear teeth when any part of the fillet curve lies inside a line drawn tangent to the working profile at its point of juncture with the fillet.
PITCH DIAMETER (D) is the diameter of the pitch circle. In parallel shaft gears, the pitch diameters can be determined directly from the center distance and the number of teeth.
WHOLE DEPTH (ht) is the total depth of a tooth space, equal to addendum plus dedendum, equal to the working depth plus variance.
PRESSURE ANGLE (ø) is the angle at a pitch point between the line of pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. In involute teeth, pressure angle is often described also as the angle between the line of action and the line tangent to the pitch circle. Standard pressure angles are established in connection with standard gear-tooth proportions.
WORKING DEPTH (hk) is the depth of engagement of two gears; that is, the sum of their addendums.
Tooth Parts PINION PINION
PITCH CIRCLE
LINE OF ACTION
OUTSIDE DIA. PRESSURE ANGLE
TOOTH PROFILE (INVOLUTE)
I
BASE CIRCLE PITCH CIRCLE WHOLE DEPTH
WORKING DEPTH
CENTER DISTANCE
CLEARANCE ADDENDUM DEDENDUM CIRCULAR TOOTH THICKNESS
ROOT (TOOTH) FILLET
ROOT DIA.
CIRCULAR PITCH GEAR GEAR
P-1930-BG
04/10
Boston Gear 800-825-6544
299
Engineering Information Spur Gears Involute Form Gear teeth could be manufactured with a wide variety of shapes and profiles. The involute profile is the most commonly used system for gearing today, and all Boston spur and helical gears are of involute form. An involute is a curve that is traced by a point on a taut cord unwinding from a circle, which is called a BASE CIRCLE. The involute is a form of spiral, the curvature of which becomes straighter as it is drawn from a base circle and eventually would become a straight line if drawn far enough.
EA CIRCL
I
E– UT OL V N
An involute drawn from a larger base circle will be less curved (straighter) than one drawn from a smaller base circle. Similarly, the involute tooth profile of smaller gears is considerably curved, on larger gears is less curved (straighter), and is straight on a rack, which is essentially an infinitely large gear.
E–
C
B
CI
LE
E CL
A
C IR
R
INVOLUT
C
IR
CLE
B
I Involute gear tooth forms and standard tooth proportions are specified in terms of a basic rack which has straight-sided teeth, for involute systems.
20 TEETH
300
Boston Gear 800-825-6544
48 TEETH
RACK
P-1930-BG
04/10
Engineering Information Spur Gears Diametral Pitch System All stock gears are made in accordance with the diametral pitch system. The diametral pitch of a gear is the number of teeth in the gear for each inch of pitch diameter. Therefore, the diametral pitch determines the size of the gear tooth.
Pressure Angle Pressure angle is the angle at a pitch point between the line of pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. The pressure angle, as defined in this catalog, refers to the angle when the gears are mounted on their standard center distances. Boston Gear manufactures both 14-1/2° and 20° PA, involute, full depth system gears. While 20°PA is generally recognized as having higher load carrying capacity, 14-1/2°PA gears have extensive use. The lower pressure angle results in less change in backlash due to center distance variation and concentricity errors. It also provides a higher contact ratio and consequent smoother, quieter operation provided that undercut of teeth is not present.
I
Tooth dimensions For convenience, Tooth Proportions of various standard diametral pitches of Spur Gears are given below.
Circular Diametral Pitch Pitch (Inches) 3 4 5 6 8 10 12 16 20 24 32 48 64
P-1930-BG
1.0472 .7854 .6283 .5236 .3927 .3142 .2618 .1963 .1571 .1309 .0982 .0654 .0491
04/10
Thickness of Tooth Depth to be on Pitch Cut in Gear Line (Inches) Addendum (Inches) (Hobbed Gears) (Inches) .5236 .3927 .3142 .2618 .1963 .1571 .1309 .0982 .0785 .0654 .0491 .0327 .0245
.7190 .5393 .4314 .3565 .2696 .2157 .1798 .1348 .1120 .0937 .0708 .0478 .0364
.3333 .2500 .2000 .1667 .1250 .1000 .0833 .0625 .0500 .0417 .0312 .0208 .0156
Boston Gear 800-825-6544
301
Engineering Information Spur Gears Backlash
Spur Gear Formulas
Stock spur gears are cut to operate at standard center distances. The standard center distance being defined by:
FOR FULL DEPTH INVOLUTE TEETH
Standard Center Distance = Pinion PD + Gear PD 2 When mounted at this center distance, stock spur gears will have the following average backlash: Diametral Pitch
Backlash (Inches)
Diametral Pitch
Backlash (Inches)
3 4 5 6 7
.013 .010 .008 .007 .006
8-9 10-13 14-32 33-64
.005 .004 .003 .0025
For 14-1/2°–Change in Center Distance = 1.933 x Change in Backlash For 20° –Change in Center Distance = 1.374 x Change in Backlash
From this, it is apparent that a given change in center distance, 14-1/2° gears will have a smaller change in backlash than 20° gears. This fact should be considered in cases where backlash is critical.
Undercut
Diametral Pitch (P)
Circular Pitch (p)
Base Diameter (Db) Number of Teeth (N) Tooth Thickness (t) @Pitch Diameter (D) Addendum (a) Outside Diameter (Do) Whole Depth (ht) (20P & Finer) Whole Depth (ht) (Courser than 20P) Working Depth (h k) Clearance (c) Dedendum (b) Contact Ratio (Mc)
When the number of teeth in a gear is small, the tip of the mating gear tooth may interfere with the lower portion of the tooth profile. To prevent this, the generating process removes material at this point. This results in loss of a portion of the involute adjacent to the tooth base, reducing tooth contact and tooth strength. On 14-1/2°PA gears undercutting occurs where a number of teeth is less than 32 and for 20°PA less than 18. Since this condition becomes more severe as tooth numbers decrease, it is recommended that the minimum number of teeth be 16 for 14-1/2°PA and 13 for 20°PA. In a similar manner INTERNAL Spur Gear teeth may interfere when the pinion gear is too near the size of its mating internal gear. The following may be used as a guide to assure proper operation of the gear set. For 14-1/2°PA, the difference in tooth numbers between the gear and pinion should not be less than 15. For 20°PA the difference in tooth numbers should not be less than 12.
Having
Formula
Circular Pitch (p)
Pitch Diameter (D)
An increase or decrease in center distance will cause an increase or decrease in backlash. Since, in practice, some deviation from the theoretical standard center distance is inevitable and will alter the backlash, such deviation should be as small as possible. For most applications, it would be acceptable to limit the deviation to an increase over the nominal center distance of one half the average backlash. Varying the center distance may afford a practical means of varying the backlash to a limited extent. The approximate relationship between center distance and backlash change of 14-1/2° and 20° pressure angle gears is shown below:
I
To Obtain
P = 3.1416 p Number of Teeth (N) & P = N Pitch Diameter (D) D Number of Teeth (N) & P = N + 2 (Approx.) Outside Diameter (Do) Do Diametral Pitch (P) p = 3.1416 P Number of Teeth (N) & D = N Diametral Pitch (P) P Outside Diameter (Do) & D = D – 2 o Diametral Pitch (P) P Pitch Diameter (D) and Db = Dcosø Pressure Angle (ø) Diametral Pitch (P) & N=PxD Pitch Diameter (D) Diametral Pitch (P) t = 1.5708 P 1 Diametral Pitch (P) a= P Pitch Diameter (D) & Do = D + 2a Addendum (a) Diametral Pitch (P) ht = 2.2 + .002 P Diametral Pitch (P) ht = 2.157 P Addendum (a) hk = 2(a) Whole Depth (ht) c = ht – 2a Addendum (a) Whole Depth (ht) & b = ht – a Addendum (a) Outside Radii, Base Radii, Center Distance and Pressure Angle+C.P.
2 2 2 2 M-C-= Ro – Rb + ro – rb – Csinø*
p cosø
Root Diameter (Dr) Center Distance (C)
Pitch Diameter (D) and Dedendum (b) Pitch Diameter (D) or No. of Teeth and Pitch
Dr = D – 2b C = D1 + D2 2 or N1 + N2 2P
*Ro = Outside Radius, Gear ro = Outside Radius, Pinion Rb = Base Circle Radius, Gear rb = Base Circle Radius, Pinion
p φ
a
PITCH LINE
hk h t
b
t
c rf
302
Boston Gear 800-825-6544
a b c hk ht p rf t φ
= ADDENDUM = DEDENDUM = CLEARANCE = WORKING DEPTH = WHOLE DEPTH = CIRCULAR PITCH = FILLET RADIUS = CIRCULAR TOOTH THICKNESS = PRESSURE ANGLE
P-1930-BG
04/10
Engineering Information Spur Gears TABLE II–VALUES OF SAFE STATIC STRESS (s)
Lewis Formula (Barth Revision) Gear failure can occur due to tooth breakage (tooth stress) or surface failure (surface durability) as a result of fatigue and wear. Strength is determined in terms of tooth-beam stresses for static and dynamic conditions, following well established formula and procedures. Satisfactory results may be obtained by the use of Barth’s Revision to the Lewis Formula, which considers beam strength but not wear. The formula is satisfactory for commercial gears at Pitch Circle velocities of up to 1500 FPM. It is this formula that is the basis for all Boston Spur Gear ratings. METALLIC SPUR GEARS
W= SFY P
600 600 + V
W = Tooth Load, Lbs. (along the Pitch Line) S = Safe Material Stress (static) Lbs. per Sq. In. (Table II) F = Face Width, In. Y = Tooth Form Factor (Table I) P = Diametral Pitch D = Pitch Diameter V = Pitch Line Velocity, Ft. per Min. = .262 x D x RPM For NON-METALLIC GEARS, the modified Lewis Formula shown below may be used with (S) values of 6000 PSI for Phenolic Laminated material.
W= SFY P
Material (s) Lb. per Sq. In. Plastic ........................................................................ 5000 Bronze ........................................................................ 10000 Cast Iron ..................................................................... 12000 .20 Carbon (Untreated) ................................... 20000 .20 Carbon (Case-hardened) .......................... 25000 Steel .40 Carbon (Untreated) ................................... 25000 .40 Carbon (Heat-treated)............................... 30000 .40 C. Alloy (Heat-treated) .............................. 40000
{
Max. allowable torque (T) that should be imposed on a gear will be the safe tooth load (W) multiplied by D or T = W x D 2 2 The safe horsepower capacity of the gear (at a given RPM) can be calculated from HP = T x RPM or directly from (W) and (V); 63,025 WV HP = 33,000 For a known HP, T = 63025 x HP RPM
150 + .25 200 + V
TABLE I TOOTH FORM FACTOR (Y)
P-1930-BG
04/10
Number of Teeth
14-1/2° Full Depth Involute
20° Full Depth Involute
10 11 12 13 14 15 16 17 18 19 20 22 24 26 28 30 32 34 36 38 40 45 50 55 60 65 70 75 80 90 100 150 200 300 Rack
0.176 0.192 0.210 0.223 0.236 0.245 0.255 0.264 0.270 0.277 0.283 0.292 0.302 0.308 0.314 0.318 0.322 0.325 0.329 0.332 0.336 0.340 0.346 0.352 0.355 0.358 0.360 0.361 0.363 0.366 0.368 0.375 0.378 0.382 0.390
0.201 0.226 0.245 0.264 0.276 0.289 0.295 0.302 0.308 0.314 0.320 0.330 0.337 0.344 0.352 0.358 0.364 0.370 0.377 0.383 0.389 0.399 0.408 0.415 0.421 0.425 0.429 0.433 0.436 0.442 0.446 0.458 0.463 0.471 0.484
I
Boston Gear 800-825-6544
303
Engineering Information Helical Gears Gear Nomenclature
Helix Angle—
The information contained in the Spur Gear section is also pertinent to Helical Gears with the addition of the following: HELIX ANGLE (ψ) is the angle between any helix and an element of its cylinder. In helical gears, it is at the pitch diameter unless otherwise specified. LEAD (L) is the axial advance of a helix for one complete turn, as in the threads of cylindrical worms and teeth of helical gears. NORMAL DIAMETRAL PITCH (Pn) is the Diametral Pitch as calculated in the normal plane. HAND – Helical Gears of the same hand operate at right angles, see Fig. 1 Helical Gears of opposite hands run on parallel shafts. Fig. 2
NORMAL PLANE
HELIX ANGLE
AXIAL PLANE
pn
Ψ
p p = AXIAL CIRCULAR PITCH pn = NORMAL CIRCULAR PITCH TWO RIGHT-HAND HELICAL GEARS
TWO LEFT-HAND HELICAL GEARS
Figure 1
LEFT HAND HELICAL GEAR
LEFT-HAND AND RIGHT-HAND HELICAL GEARS
Figure 2
RIGHT HAND HELICAL GEAR
I
All Boston Helicals are cut to the Diametral Pitch system, resulting in a Normal Pitch which is lower in number than the Diametral Pitch. INVOLUTE—The Helical tooth form is involute in the plane of rotation and can be developed in a manner similar to that of the Spur Gear. However, unlike the Spur Gear, which may be viewed as two-dimensional, the Helical Gear must be viewed as three-dimensional to show change in axial features. Helical gears offer additional benefits relative to Spur Gears, those being: • Improved tooth strength due to the elongated helical wraparound. • Increased contact ratio due to the axial tooth overlap. • Helical Gears thus tend to have greater load carrying capacity than Spur Gears of similar size. • Due to the above, smoother operating characteristics are apparent.
The teeth of a LEFT HAND Helical Gear lean to the left when the gear is placed flat on a horizontal surface.
304
The teeth of a RIGHT HAND Helical Gear lean to the right when the gear is placed flat on a horizontal surface.
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Helical Gears Helical Gear Formulas To Obtain
Having
Transverse Diametral Pitch (P) Pitch Diameter (D) Normal Diametral Pitch (PN) Normal Circular Tooth Thickness (τ) Transverse Circular Pitch (pt) Normal Circular Pitch (pn) Lead (L)
Helical Gear Lewis Formula Formula
Number of Teeth (N) & Pitch Diameter (D) Normal Diametral Pitch (Pn) Helix Angle (ψ) Number of Teeth (N) & Transverse Diametral Pitch (P) Transverse Diametral Pitch (P) & Helix Angle (ψ) Normal Diametral Pitch (PN) Diametral Pitch (P) (Transverse) Transverse Circular Pitch (p) Pitch Diameter and Pitch Helix Angle
P=N D
The beam strength of Helical Gears operating on parallel shafts can be calculated with the Lewis Formula revised to compensate for the difference between Spur and Helical Gears, with modified Tooth Form Factors Y.
P = PNCosψ D=N P P Cosψ τ = 1.5708 PN p =π t P PN =
pn= ptCosψ L = πD Tanψ
Transverse Vs. Normal Diametral Pitch for Boston 45° Helical Gears P Transverse Diametral Pitch
PN Normal Diametral Pitch
24 20 16 12 10 8 6
33.94 28.28 22.63 16.97 14.14 11.31 8.48
W= SFY PN
600 600 + V
W =Tooth Load, Lbs. (along the Pitch Line) S =Safe Material Stress (static) Lbs. per Sq. In. (Table III) F =Face Width, Inches Y =Tooth Form Factor (Table IV) PN =Normal Diametral Pitch (Refer to Conversion Chart) D =Pitch Diameter V =Pitch Line Velocity, Ft. Per Min. = .262 x D x RPM
Table III–Values of Safe Static Stress (s) Material (s) Lb. per Sq. In. Bronze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10000 Cast Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12000 .20 Carbon (Untreated) . . . . . . . . . . . . . . . . 20000 .20 Carbon (Case-hardened) . . . . . . . . . . . 25000 Steel .40 Carbon (Untreated) . . . . . . . . . . . . . . . . 25000 .40 Carbon (Heat-treated) . . . . . . . . . . . . . . 30000 .40 C. Alloy (Heat-treated) . . . . . . . . . . . . . . 40000
{
Table IV—Values of Tooth Form Factor (Y) No. of Teeth 8 9 10 12 15 16 18 20 24
FOR 14-1/2°PA—45° HELIX ANGLE GEAR Factor No. of Factor Y Teeth Y .295 25 .361 .305 30 .364 .314 32 .365 .327 36 .367 .339 40 .370 .342 48 .372 .345 50 .373 .352 60 .374 .358 72 .377
I
Horsepower and Torque Max. allowable torque (T) that should be imposed on a gear will be the safe tooth load (W) multiplied by D or T = W x D 2 2 The safe horsepower capacity of the gear (at a given RPM) can be calculated from HP = T x RPM or directly from (W) and (V); 63,025 HP = WV 33,000 For a known HP, T = 63025 x HP RPM
P-1930-BG
04/10
Boston Gear 800-825-6544
305
Engineering Information Helical Gears When Helical gears are operated on other than Parallel shafts, the tooth load is concentrated at a point, with the result that very small loads produce very high pressures. The sliding velocity is usually quite high and, combined with the concentrated pressure, may cause galling or excessive wear, especially if the teeth are not well lubricated. For these reasons, the tooth load which may be applied to such drives is very limited and of uncertain value, and is perhaps best determined by trial under actual operating conditions. If one of the gears is made of bronze, the contact area and thereby the load carrying capacity, may be increased, by allowing the gears to “run-in” in their operating position, under loads which gradually increase to the maximum expected.
Thrust Loads As a result of the design of the Helical Gear tooth, an axial or thrust load is developed. Bearings must be adequate to absorb this load. The thrust load direction is indicated below. The magnitude of the thrust load is based on calculated Horsepower. 126,050 x HP Axial Thrust Load = RPM x Pitch Diameter Boston Helicals are all 45° Helix Angle, producing a tangential force equal in magnitude to the axial thrust load. A separating force is also imposed on the gear set based on calculated Horsepower. Separating Load = Axial Thrust Load x .386 Above formulae based on Boston 45° Helix Angle and 14-1/2° Normal Pressure Angle.
RIGHT HAND DRIVER
THRUST BEARING
DRIVER
LEFTHAND DRIVER
THRUST BEARING
DRIVER
I LEFT-HAND DRIVER DRIVER
THRUST BEARING
RIGHT-HAND
See page 118 for hardened and ground Thrust Washers.
306
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Miter and Bevel Gears Gear geometry for both straight and spiral tooth Miter and Bevel gears is of a complex nature and this text will not attempt to cover the topic in depth.
Similar in nature to Helical gearing, Spiral Miters and Bevels must be run with a mating pinion or gear of opposite hand.
The basic tooth form is a modification to the involute form and is the common form used in production today. All Boston standard stock Miter and Bevel gears are manufactured with a 20° Pressure Angle. Bevel gears are made in accordance with A.G.M.A. specifications for long and short Addendum system for gears and pinions (pinion is cut long Addendum) which serves to reduce the amount of pinion tooth undercut and to nearly equalize the strength and durability of the gear set.
Nomenclature Nomenclature may best be understood by means of graphic representation depicted below:
The teeth of a Left Hand gear lean to the left when the gear is placed on a horizontal surface.
The teeth of a Right Hand gear lean to the right when the gear is placed flat on a horizontal surface.
MOUNTING DISTANCE PITCH APEX TO CROWN
NE
DI
FACE ANGLE
All Boston Spiral Miter and Bevel gears are made with 35° spiral angles with all pinions cut left hand.
Straight Tooth Miter and Bevel Gear Formulas
PITCH
ST
CO
CROWN TO BACK
Formula
APEX
ROOT ANGLE
CE FA
PITCH ANGLE
ADDENDUM DEDENDUM WHOLE DEPTH
To Obtain
Having
Pitch Diameter (D,d) Whole Depth (hT)
No. of Teeth and Diametral Pitch (P)
d=n P
Diametral Pitch (P)
hT =
Addendum (a)
Diametral Pitch (P)
Dedendum (b) PITCH DIA. ST
Clearance
BA CK
CO
NE
DI
O.D.
Circular Tooth Thickness (τ) Pitch Angle Outside Diameter (Do, do)
Pinion
Whole Depth (hT) & Addendum (a) Whole Depth (nT) & Addendum (a) Diametral Pitch (P) Number of Teeth In Pinion (Np) and Gear (NG) Pinion & Gear Pitch Diameter (Dp + DG) Addendum (a) & Pitch Angle (Lp + LG)
Gear D=n P
2.188 2.188 + .002 hT = + .002 P P 1 1 a= a= P P
b = hT – a
b = hT – a
c = hT – 2a
c = hT – 2a
τ=
1.5708 P
( )
Lp = tan -1 Np NG
τ=
1.5708 P
I
LG = 90 – Lp
do=Dp+2a(cos Lp) Do=DG+2a(cos LG)
Stock gears are cut to operate on an exact Mounting Distance with the following average backlash:
Diametral Pitch
Backlash (Inches)
4 5 6 8 10 12-20 24-48
.008 .007 .006 .005 .004 .003 .002
P-1930-BG
04/10
Boston Gear 800-825-6544
307
Engineering Information Miter and Bevel Gears Straight tooth bevel (and miter) gears are cut with generated tooth form having a localized lengthwise tooth bearing known as the “Coniflex”® tooth form. The superiority of these gears over straight bevels with full length tooth bearing, lies in the control of tooth contact. The localization of contact permits minor adjustment of the gears in assembly and allows for some displacement due to deflection under operating loads, without concentration of the load on the end of the tooth. This results in increased life and quieter operation.
Incorrect If Mounting Distance of one or both gears is made less than dimension specified, the teeth may bind. Excessive wear or breakage can result. Drawing below shows gears mounted incorrectly with the Mounting Distance too short for one gear.
PINION APEX DEFLECTED OR ASSEMBLED OFF CENTER
PINION APEX ON CENTER
MOUNTING DISTANCE TOO SMALL
TOOTH BEARING SHIFTED OFF CENTER BUT STILL SAFE
TOOTH BEARING CENTRAL
(A)
Incorrect
(B)
ILLUSTRATION OF LOCALIZED TOOTH BEARING IN STRAIGHT BEVEL CONIFLEX® GEARS
Boston Gear Bevel and Miter Gears will provide smooth, quiet operation and long life when properly mounted and lubricated. There are several important considerations in mounting these gears.
If Mounting Distance of either gear is made longer than dimension specified, as shown in drawing below, the gears will not be in full mesh on a common pitch line and may have excessive backlash. Excessive backlash or play, if great enough, can cause a sudden impulse or shock load in starting or reversing which might cause serious tooth damage.
1. All standard stock bevel and miter gears must be mounted at right angles (90°) for proper tooth bearing.
I
2. Mounting Distance (MD) is the distance from the end of the hub of one gear to the center line of its mating gear. When mounted at the MD specified, the gears will have a proper backlash and the ends of the gear teeth will be flush with each other (see drawings). 3. All bevel and miter gears develop radial and axial thrust loads when transmitting power. See page 309. These loads must be accommodated by the use of bearings.
MOUNTING DISTANCE
MOUNTING DISTANCE TOO GREAT
MOUNTING DISTANCE MOUNTING DISTANCE
MOUNTING DISTANCE
®Registered in the U.S. Patent Office.
308
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Miter and Bevel Bears Tooth Strength (Straight Tooth) The beam strength of Miter and Bevel gears (straight tooth) may be calculated using the Lewis Formula revised to compensate for the differences between Spur and Bevel gears. Several factors are often combined to make allowance for the tooth taper and the normal overhung mounting of Bevel gears.
W= SFY P
W= S = F = Y = P = D = V =
600 600 + V
Thrust The axial thrust loads developed by straight tooth miter and bevel gears always tend to separate the gears.
.75
Tooth Load, Lbs. (along the Pitch Line) Safe Material Stress (static) Lbs. per Sq. In. (Table 1) Face Width, In. Tooth Form Factor (Table I) Diametral Pitch Pitch Diameter Pitch Line Velocity, Ft. per Min. = .262 x D x RPM
For Spiral Bevel and Miter Gears, the direction of axial thrust loads developed by the driven gears will depend upon the hand and direction of rotation. Stock Spiral Bevel pinions cut Left Hand only, Gears Right Hand only.
TABLE I VALUES OF SAFE STATIC STRESS (s) Material (s) Lb. per Sq. In. Plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000 Bronze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10000 Cast Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12000 .20 Carbon (Untreated) . . . . . . . . . . . . . . . . . . . . . . 20000 .20 Carbon (Case-hardened) . . . . . . . . . . . . . . . . . . 25000 Steel .40 Carbon (Untreated) . . . . . . . . . . . . . . . . . . . . . . 25000 .40 Carbon (Heat-treated) . . . . . . . . . . . . . . . . . . . . 30000 .40 C. Alloy (Heat-treated) . . . . . . . . . . . . . . . . . . . . 40000
{
TABLE II TOOTH FORM FACTOR (Y) 20°P.A.—LONG ADDENDUM PINIONS SHORT ADDENDUM GEARS
No. Ratio Teeth 1 1.5 2 3 4 6 Pinion Pin. Gear Pin. Gear Pin. Gear Pin. Gear Pin. Gear Pin. Gear 12 14 16 18 20 24 28 32 36 40
— — .333 .342 .352 .371 .386 .399 .408 .418
— .349 .367 .383 .402 .424 .446 .462 .477 —
— .292 .311 .328 .339 .364 .383 .396 .408 —
.345 .367 .386 .402 .418 .443 .462 .487 .518 .543
.283 .301 .320 .336 .349 .368 .386 .402 .415 .424
.355 .377 .396 .415 .427 .471 .509 .540 .569 .594
.302 .317 .333 .346 .355 .377 .396 .412 .424 .434
.358 .380 .402 .427 .456 .506 .543 — — —
.305 .323 .339 .364 .386 .405 .421 — — —
.361 .405 .443 .474 .500 — — — — —
.324 .352 .377 .399 .421 — — — — —
Horsepower and Torque Max. allowable torque (T) that should be imposed on a gear will be the safe tooth load (W) multiplied by D or T = W x D 2 2 The safe horsepower capacity of the gear (at a given RPM) can be calculated from HP = T x RPM or directly from (W) and (V); 63,025 WV HP = 33,000 For a known HP, T = 63025 x HP RPM
The magnitude of the thrust may be calculated from the formulae below, based on calculated HP, and an appropriate Thrust Bearing selected.
Straight Bevels and Miters Gear Thrust =
126,050 x HP x tan α cos β RPM x Pitch Diameter
Pinion Thrust =
126,050 x HP x tan α sin β RPM x Pitch Diameter
Spiral Bevels and Miters
I
Thrust values for Pinions and Gears are given for four possible combinations. R.H. SPIRAL
CLOCKWISE L.H. SPIRAL
TP = 126,050 x HP
tanα sinβ – tanγ cosβ cosγ
TG = 126,050 x HP
tanα cosβ + tanγ sinβ cosγ
TP = 126,050 x HP
tanα sinβ + tanγ cosβ cosγ
TG = 126,050 x HP
tanα cosβ + tanγ sinβ cosγ
RPM x D RPM x D
C. CLOCKWISE L.H. SPIRAL
CLOCKWISE R.H. SPIRAL
RPM x D RPM x D
C. CLOCKWISE
α = Tooth Pressure Angle β = 1/2 Pitch Angle NP Pitch Angle = tan-1 N G γ = Spiral Angle = 35°
( )
P-1930-BG
04/10
Boston Gear 800-825-6544
309
Engineering Information Worms and Worm Gears Boston standard stock Worms and Worm Gears are used for the transmission of motion and/or power between nonintersecting shafts at right angles (90°). Worm Gear drives are considered the smoothest and quietest form of gearing when properly applied and maintained. They should be considered for the following requirements: HIGH RATIO SPEED REDUCTION LIMITED SPACE RIGHT ANGLE (NON-INTERSECTING) SHAFTS GOOD RESISTANCE TO BACK DRIVING General nomenclature having been applied to Spur and Helical gear types, may also be applied to Worm Gearing with the addition of Worm Lead and Lead Angle, Number of Threads (starts) and Worm Gear Throat diameter.
Thrust Loads As is true with Helical and Bevel gearing, Worm gearing, when operating, produces Thrust loading. The Chart below indicates the direction of thrust of Worms and Worm Gears when they are rotated as shown. To absorb this thrust loading, bearings should be located as indicated.
RIGHT-HAND DRIVEN
DRIVEN
DRIVER
DRIVER
THRUST BEARING
HOW TO TELL A LEFT-HAND OR RIGHT-HAND WORM OR WORM GEAR
DRIVEN
DRIVEN
LEFT-HAND DRIVEN
DRIVER
DRIVEN
DRIVER
THRUST BEARING
DRIVEN
DRIVEN
Threads of LEFT-HAND lean to the Left when standing on either end:
I
Efficiency The efficiency of a worm gear drive depends on the lead angle of the worm. The angle decreases with increasing ratio and worm pitch diameter. For maximum efficiency the ratio should be kept low. Due to the sliding action which occurs at the mesh of the Worm and Gear, the efficiency is dependent on the Lead Angle and the Coefficient of the contacting surface. A common formula for estimating efficiency of a given Worm Gear reduction is: EFFICIENCY = E = Tanγ (1 – f tanγ) f + tanγ Threads of RIGHT-HAND lean to the Right when standing on either end:
where γ = Worm Lead Angle f = Coefficient of Friction For a Bronze Worm Gear and hardened Steel Worm, a Coefficient of Friction in the range of .03/.05 may be assumed for estimated value only.
310
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Worms and Worm Gears Worm and Worm Gear Formulas To Obtain
Worm Gear Back-Driving
Having
Formula p = 3.1416 P P = 3.1416 p
Circular Pitch (p)
Diametral Pitch (P)
Diametral Pitch (P)
Circular Pitch (p)
Lead (of Worm) (L)
Number of Threads in Worm & Circular Pitch (p)
L = p(No. of Threads)
Addendum (a)
Diametral Pitch (P)
a=1 P
Pitch Diameter (D) of Worm (DW) Pitch Diameter of Worm Gear (DG) Center Distance Between Worm & Worm Gear (CD)
Outside Diameter (d o) & Addendum (a) Circular Pitch (p) & Number of Teeth (N) Pitch Diameter of Worm (d w) & Worm Gear (DG) Circular Pitch (p)
DW = do – 2a
Diametral Pitch (P)
hT = 2.157 P
Whole Depth (h T) & Outside Diameter (d w) Pitch Diameter of Worm Gear (D) & Addendum (a) Pitch Diameter of Worm(D) & The Lead (L) No. of Teeth on Gear (NG) and Number of Threads on Worm Throat Dia. (DT) and Addendum (a)
dr = do – 2hT
Whole Depth of Teeth (hT) Bottom Diameter of Worm (Dr) Throat Diameter of Worm Gear (DT) Lead Angle of Worm (γ) Ratio Gear O.D. (DO)
DG =
This is the converse of self-locking and refers to the ability of the worm gear to drive the worm. The same variables exist, making it difficult to predict. However, our experience indicates that for a hardened worm and bronze gear properly manufactured, mounted and lubricated, back-driving capability may be expected, if the lead angle is greater than 11°. Again, no guarantee is made and the customer should be so advised.
Rating The high rate of sliding friction that takes place at the mesh of the Worm and Gear results in a more complex method of rating these Gears as opposed to the other Gear types. Material factors, friction factors and velocity factors must all be considered and applied to reflect a realistic durability rating.
NGp 3.1416
CD = dw + DG 2 hT = .6866 p
DT = DG + 2a L γ = tan-1 3.1416d NG Ratio = No. of Threads
(
)
DO = DT + .6a
Self-Locking Ability There is often some confusion as to the self-locking ability of a worm and gear set. Boston worm gear sets, under no condition should be considered to hold a load when at rest. The statement is made to cover the broad spectrum of variables effecting self-locking characteristics of a particular gear set in a specific application. Theoretically, a worm gear will not back drive if the friction angle is greater than the worm lead angle. However, the actual surface finish and lubrication may reduce this significantly. More important, vibration may cause motion at the point of mesh with further reduction in the friction angle.
I
Generally speaking, if the worm lead angle is less than 5°, there is reasonable expectation of self-locking. Again, no guarantee should be made and customer should be advised. If safety is involved, a positive brake should be used.
P-1930-BG
04/10
Boston Gear 800-825-6544
311
Engineering Information Couplings
Universal Joints
Alignment Alignment of Boston couplings should be performed by the following steps to meet lateral and angular misalignment specifications below. 1. Align shafts and supports to give minimum lateral and angular misalignment. 2. Assemble coupling halves to shaft. 3. Slide couplings together and check lateral misalignment using straight edge and feeler gauge over coupling outside diameter. (On BF Series couplings, spider must be removed.) This should be within specifications below. 4. Lock couplings on shaft and check distance using feeler gauges between drive lug on one half and space between on other coupling half. Rotate coupling and check gap at a minimum of 3 other coupling positions. The difference between any two readings should be within specifications below. FEELER GAUGE
FEELER GAUGE
The detrimental effects of these rotational deviations can be reduced, and uniform speed restored by using two joints (and an intermediate shaft) to connect shafts at an angle or misaligned in a parallel direction.
For connecting shafts in the same plane the joints should be arranged to operate at equal angles and with the bearing pins of the yokes on the intermediate shaft in line with each other.
Lubrication LATERAL MISALIGNMENT
ANGULAR MISALIGNMENT
PIN and BLOCK TYPE These universal joints are not lubricated when shipped.
MISALIGNMENT TOLERANCES
Coupling Series FC–Bronze Insert FC–Urethane Insert FC–Rubber Insert BF BG (Shear Type) FA FCP (Plastic)
I
Lateral
Angular
.001 .002 .002 .002 1/32 .002 .003
See Chart below 1-1/2° 2° 2° 3°
FC Series ANGULAR MISALIGNMENT Chart reflects maximum angular misalignment of 1-1/2° for rubber, 1° for urethane and 1/2° for bronze. MAXIMUM READING DIFFERENTIAL
Size
Rubber
Insert Urethane
Bronze
FC12 FC15 FC20 FC25 FC30 FC38 FC45
.033 .039 .053 .066 .078 .097 .117
.022 .026 .035 .044 .052 .065 .078
.011 .013 .018 .022 .026 .032 .039
Mounting A single universal joint (rotating at uniform speed) operating at an angle will introduce periodic variations of angular velocity to the driven shaft. These cyclic speed fluctuations (two per revolution) cause vibration, higher shaft stresses and bearing loads which will be more severe with larger angles of operation. 312
Boston Gear 800-825-6544
Many applications are considered severe when in harsh environments and when a combination of speed, dirt contamination and inaccessible locations make it impractical to maintain proper lubrication. It is in these instances when the Boot Kits become a desirable alternative. For satisfactory performance, all booted joints should be used with a LITH-EP-000 grease for an ambient temperature range of 40° to 225°F.
VOLUME OF LUBRICATION FOR BOOTED JOINTS
Size 37 50 62 75 87
Volume (Ozs.) .4 .5 .75 1.0 1.5
Size 100 125 150 175 200
Volume (Ozs.) 2.0 3.5 4.5 7.0 15.0
Size 250 300 400
Volume (Ozs.) 25.0 30.0 50.1
NOTE: Joints should be initially lubricated with a 90 weight oil before being packed with grease.
FORGED AND CAST TYPE Universal joints are not lubricated when shipped. Lubricate these joints with a Lith EP-2 grease or equivalent. The center cross of these joints holds a generous supply of lubricant which is fed to the bearings by centrifugal action. Light-duty, low-angle operation may require only occasional lubrication. For high-angle, high-speed operation or in extreme dirt or moist conditions, daily regreasing may be required.
P-1930-BG
04/10
Engineering Information HOW TO FIGURE HORSEPOWER AND TORQUE
To Obtain
Having
Velocity (V) Feet Per Minute
STANDARD KEYWAYS & SETSCREW
Formula
Velocity (V) Ft. Per Min. V Rev. per Min. (RPM) & Pitch Diameter (D) of RMP = .268 xD Gear or Sprocket – Inches Pitch Diameter (D) of Gear or Sprocket – Inches
Velocity (V) Ft. Per Min & Rev. Per Min. (RPM)
Torque (T) In. Lbs.
Force (W) Lbs. & Radius (R) Inches
T=WxR
Horsepower (HP)
Force (W) Lbs. & Velocity (V) Ft. Per Min.
HP = W X V 33000
Horsepower (HP)
Torque (T) In Lbs. & Rev. per Min. (RPM)
HP =
Torque (T) In. Lbs.
Horsepower (HP) & Rev. Per Min. (RPM)
63025 x HP T= RPM
D=
Diam. of Hole
W
D
Recommended Setscrew
5/16 to 7/16” 1/2 to 9/16 5/8 to 7/8 15/16 to 1-1/4 1-5/16 to 1-3/8 1-7/16 to 1-3/4 1-13/16 to2-1/4 2-5/16 to 20-3/4 2-13/16 to 3-1/4 3-5/16 to 3-3/4 3-13/16 to 4-1/2 4-9/16 to 5-1/2 5-9/16 to 6-1/2
3/32” 1/8 3/16 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2
3/64” 1/16 3/32 1/8 5/32 3/16 1/4 5/16 3/8 7/16 1/2 7/16 1/2
10–32 1/4–20 5/16–18 3/8–16 7/16–14 1/2–13 9/16–12 5/8–11 3/4–10 7/8–9 1–8 1-1/8–7 1-1/4–6
Standard Keyway
Pitch Diameter (D) of Gear or sprocket – Inches V = 2618 x D x RPM & Rev. Per Min. (RPM)
V .2618 x RPM
T x TPM 63025
FORMULA:
W
d
Force (W) Lbs.
Horsepower (HP) & Velocity (V) Ft. Per Min.
X
X' = 2X – D X'
DIA. OF HOLE OR D
33000 x HP W= V
EXAMPLE: Hole 1"; Keyway 1/4" wide by 1/8" deep. X' = 2.218 – 1.000 = 1.218"
Rev. Per Min. (RPM) Horsepower (HP) & Torque (TP) In. Lbs.
P
RPM = 63025 x H T
POWER is the rate of doing work. WORK is the exerting of a FORCE through a DISTANCE. ONE FOOT POUND is a unit of WORK. It is the WORK done in exerting a FORCE OF ONE POUND through a DISTANCE of ONE FOOT. THE AMOUNT OF WORK done (Foot Pounds) is the FORCE (Pounds) exerted multiplied by the DISTANCE(Feet) through which the FORCE acts.
ILLUSTRATION OF HORSEPOWER
FORCE (W) *33,000 lbs.
FORCE (W) 1000 lbs. 33000 lbs.
1000 lbs. DISTANCE = 33FT. TIME = 1 MIN.
DISTANCE = 1FT. TIME = 1 MIN.
TORQUE (T) is the product of a FORCE (W) in pounds, times a RADIUS (R) in inches from the center of shaft (Lever Arm) and is expressed in Inch Pounds. R=1*
R=2*
THE AMOUNT OF POWER used (Foot Pounds per Minute( is the WORK (Foot Pounds) done divided by the TIME (Minutes) required. POWER (Foot Pounds per Minute) = WORK (Ft. Lbs.) TIME (Minutes) POWER is usually expressed in terms of HORSEPOWER. HORSEPOWER is POWER (Foot Pounds per Minute) divided by 33,000. HORSEPOWER (HP) POWER (Ft. Lbs. per Minute) = 33,000 WORK (Ft. Pounds) 33,000 x TIME (Min.) FORCE (Lbs.) x DISTANCE (Feet) = 33,000 x TIME (Min.) =
HORSEPOWER (HP) FORCE (Lbs.) x DISTANCE (Feet) = 33,000 x TIME (Min.)
PP-1930-BG
02/10
I W 300*
W 150*
T=WR=300 x 1=300 In. Lbs. Lbs.
T=WR=150 x 2=300 In.
If the shaft is revolved, the FORCE (W) is moved through a distance, and WORK is done. 2πR WORK (Ft. Pounds ) = W x x No. of Rev. of Shaft. 12 When this WORK is done in a specified TIME, POWER is used. 2πR POWER (Ft. Pounds per Min.) = W x x RPM 12 Since (1) HORSEPOWER = 33,000 Foot Pounds per minute 2ΠR RPM W X R X RPM HORSEPOWER (HP) = W x x = 12 33,000 63,025 but TORQUE (Inch Pounds) = FORCE (W) x RADIUS (R) TORQUE (T) x (RPM Therefore HORSEPOWER (HP) = 63,025
Boston Gear 800-825-6544
313
Engineering Information General Mounting
Alterations
SPUR & HELICAL
Boston Gear Service Centers are equipped to alter catalog sprockets (rebore, keyway, setscrew, etc.). For customers, choosing to make their own alterations, the guidelines listed below should be beneficial. Alterations to hardened gears should not be made without consultation with factory. In setting up for reboring the most important consideration is to preserve the accuracy of concentricity and lateral runout provided in the original product. There are several methods for accomplishing this. One procedure is: mount the part on an arbor, machine hub diameter to provide a true running surface, remove from arbor and chuck on the hub diameter, check face and bore runout prior to reboring. As a basic rule of thumb, the maximum bore should not exceed 60% of the Hub Diameter and depending on Key size should be checked for minimum wall thickness. A minimum of one setscrew diameter over a keyway is considered adequate. Boston Gear offers a service for hardening stock sprockets. This added treatment can provide increased horsepower capacity with resultant longer life and/or reduction in size and weight. Customers wishing to do the hardening operation should refer to “Materials” below for information.
For proper functioning gears, gears must be accurately aligned and supported by a shaft and bearing system which maintains alignment under load. Deflection should not exceed .001 inch at the tooth mesh for general applications. The tolerance on Center Distance normally should be positive to avoid possibility of gear teeth binding. Tolerance value is dependent on acceptable system backlash. As a guide for average application, this tolerance might vary from .002 for Boston Gear’s fine pitch gears to .005 for the coarsest pitch.
WORMS AND WORM GEAR It is important that the mounting assures the central plane of the Worm gear passes essentially through the axis of the Worm. This can be accomplished by adjusting the Worm Gear axially. Boston Worm Gears are cut to close tolerancing of the Center Line of the Gear tooth to the flush side of the Gear. When properly mounted Worm Gears will become more efficient after initial break-in period.
HOW WORM GEARS “ADJUST” THEMSELVES The gear in a worm gear reducer is made of a soft bronze material. Therefore, it can cold-work and wear-in to accommodate slight errors in misalignment.
Evolution of Contact in a Worm Gear
Worm rotation Entering side
Leaving side
Initially, contact is concentrated on the leaving side of the worm.
I After several hours or running under load, gear has cold-worked to spread area of contact.
Lubrication The use of a straight mineral oil is recommended for most worm gear applications. This type of oil is applicable to gears of all materials, including non-metallic materials. Mild E.P. (Extreme Pressure) lubricants may be used with Iron and Steel Gears. E.P. lubricants normally should be selected of the same viscosity as straight mineral oil, E.P. lubricants are not recommended for use with brass or bronze gears. SAE80 or 90 gear oil should be satisfactory for splash lubricated gears. Where extremely high or low speed conditions are encountered, consult a lubricant manufacturer. Oil temperature of 150°F should not be exceeded for continuous duty applications. Temperatures up to 200°F can be safely tolerated for short periods of time. Many specialty lubricants have been recently developed to meet the application demands of today’s markets, including synthetics and both high and low temperature oils and greases. In those instances where Bath or Drip Feed is not practical, a moly-Disulphide grease may be used successfully, for low speed applications.
After many hours of operation, contact has spread to cover the entire working area of the tooth.
314
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information General Materials
Styles
Boston Gear stock steel gears are made from a .20 carbon steel with no subsequent treatment. For those applications requiring increased wearability. Case-hardening produces a wear resistant, durable surface and a higher strength core. Carburizing and hardening is the most common process used. Several proprietary nitriding processes are available for producing an essentially distortion-free part with a relatively shallow but wear-resistant case. Boston stock worms are made of either a .20 or .45 carbon steel. Selection of material is based on size and whether furnished as hardened or untreated.
Boston Spur, Helical, and Worm Gears are carried in Plain, Web, or Spoke styles, as illustrated.
Stock cast iron gears are manufactured from ASTM-CLASS 30 cast iron to Boston Gear specifications. This provides a fine-grained material with good wear-resistant properties.
PLAIN – A
Bronze worm and helical gears are produced from several alloys selected for bearing and strength properties. Phosphor bronze is used for helicals and some worm gears (12P and coarser). Finer pitch worm gears are made from several different grades of bronze, dependent on size. Non-metallic spur Gears listed in this Catalog are made from cotton reinforced phenolic normally referred to as Grade “C.” Plastic Gears listed are molded from either Delrin®, Acetal or Minlon®.
WEB – B
STANDARD KEYWAYS AND SETSCREWS
Diameter of Hole
W
Standard d
Recommended Setscrew
5/16 to 7/16” 1/2 to 9/16 5/8 to 7/8 15/16 to 1-1/4 1-5/16 to 1-3/8 1-7/16 to 1-3/4 1-13/16 to 2-1/4 2-5/16 to 2-3/4 2-13/16 to 3-1/4 3-5/16 to 3-3/4 3-13/16 to 4-1/2 4-9/16 to 5-1/2 5-9/16 to 6-1/2
3/32” 1/8 3/16 1/4 5/16 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2
3/64” 1/16 3/32 1/8 5/32 3/16 1/4 5/16 3/8 7/16 1/2 7/16 1/2
10-32 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9 1-8 1-1/8-7 1-1/4-6
I
WEB WITH LIGHTNING HOLES – C
W d X DIA. OF HOLE OR D
X'
Formula: X = (D/2) 2 – (W/2) 2 + d + D/2
SPOKE – D
X’ = 2X – D
Example: Hole 1”; Keyway 1/4” wide by 1/8” deep.
X = (1/2) 2 – (1/8) 2 + 1/8 + 1/2 = 1.109" X’ = 2.218 – 1.000 = 1.218”
P-1930-BG
04/10
Boston Gear 800-825-6544
315
Engineering Information Sprockets
Alterations
Overhung Load
Boston Gear Service Centers are equipped to alter catalog sprockets (rebore, keyway, setscrew, etc.). For customers, choosing to make their own alterations, the guidelines listed below should be beneficial. Alterations to hardened gears should not be made without consultation with factory. In setting up for reboring the most important consideration is to preserve the accuracy of concentricity and lateral runout provided in the original product. There are several methods for accomplishing this. One procedure is: mount the part on an arbor, machine hub diameter to provide a true running surface, remove from arbor and chuck on the hub diameter, check face and bore runout prior to reboring. As a basic rule of thumb, the maximum bore should not exceed 60% of the Hub Diameter and depending on Key size should be checked for minimum wall thickness. A minimum of one setscrew diameter over a keyway is considered adequate. Boston Gear offers a service for hardening stock sprockets. This added treatment can provide increased horsepower capacity with resultant longer life and/or reduction in size and weight. Customers wishing to do the hardening operation should refer to “Materials” below for information.
Overhung load is introduced on a shaft by the sprocket, gear, or belt from which the shaft is driven. A shaft driven by a properly installed flexible coupling would not have an overhung load. The magnitude of the overhung load is determined by the load at the driving or driven member and the distance this member is from the nearest shaft support bearing. Overhung load will reduce the safe power transmission capacity of any shaft, therefore, every effort must be made to reduce this load. There are two ways to reduce this load (1) reduce the support distance or (2) increase the diameter of the driving and driven member. In most cases, increasing the size of a drive is not possible and therefore, all effort should be made to reduce the support distance.
MINIMUM DISTANCE
Materials
MAXIMUM DIAMETER
Plastic Plastic sprockets listed are molded from Nylatron GS.
Steel Type B one-piece sprockets are furnished in a free-machining, low carbon steel. Plate sprockets (Type A) and two-piece construction (Type B) are made of low carbon steel (basically AISI 1020). 1/4” pitch (Type B) up to 20 teeth is furnished from sintered metal powder conforming to ASTM-B-426-70 Grade 1, Type III with hardness of RB60 MIN.
I
FORMULA:
Stainless Steel
X' = 2X – D
1/4, 3/8 and 1/2” Pitches stock bore, single strand are furnished from 303 free-machining Stainless Steel.
EXAMPLE:
Cast Iron
Hole 1"; Keyway 1/4" wide by 1/8" deep.
Block Chain Sprockets are furnished in Cast Iron for 9 through 12 teeth, which conforms to ASTM-A48-Class 30 Cast Iron, providing a fine-grained material with good wear resistant properties.
X' = 2.218 – 1.000 = 1.218"
W
STANDARD KEYWAYS AND SETSCREWS Diameter of Hole 5/16 to 7/16 “ 1/2 to 9/16 5/8 to 7/8 15/16 to 1-1/4 1-5/16 to 1-3/8 1-7/16 to 1-3/4 1-13/16 to 2-1/4 2-5/16 to 2-3/4 2-13/16 to 3-1/4 3-5/16 to 3-3/4 3-13/16 to 4-1/2 4-9/16 to 5-1/2 5-9/16 to 6-1/2
316
Standard Keyway W D 3/32” 3/64” 1/8 1/16 3/16 3/32 1/4 1/8 5/16 5/32 3/8 3/16 1/2 1/4 5/8 5/16 3/4 3/8 7/8 7/16 1 1/2 1-1/4 7/16 1-1/2 1/2
Boston Gear 800-825-6544
Recommended Setscrew 10–32 1/4–20 5/16–18 3/8–16 7/16–14 1/2–13 9/16–12 5/8–11 3/4–10 7/8–9 1–8 1-1/8–7 1-1/4–6
d
X
X' DIA. OF HOLE OR D
P-1930-BG
04/10
Engineering Information Sprocket Diameters for ANSI Standard Series
Number of Teeth 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 32 33 34 35 36 38 39 40 41 42 44 45 48 52 54 56 60 64 65 66 70 72 80 84 96
P-1930-BG
1/4” Pitch–No. 25 3/8” Pitch–No. 35 1/2” Pitch–No. 40 1/2” Pitch–No. 41 .130” Roller Diameter .200” Roller Diameter .312” Roller Diameter .306” Roller Diameter Pitch Outside Bottom Pitch Outside Bottom Pitch Outside Bottom Pitch Outside Bottom Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter 0.731 0.809 0.887 0.966 1.045 1.124 1.203 1.282 1.361 1.440 1.519 1.598 1.678 1.757 1.836 1.915 1.995 2.074 2.154 2.233 2.392 2.471 2.551 2.630 2.710 2.789 2.869 3.028 3.107 3.187 3.266 3.346 3.505 3.584 3.823 4.141 4.300 4.459 4.777 5.095 5.175 5.254 5.572 5.732 6.368 6.686 7.641
04/10
0.83 0.91 1.00 1.08 1.16 1.24 1.32 1.40 1.48 1.56 1.64 1.72 1.80 1.88 1.96 2.04 2.12 2.20 2.28 2.36 2.52 2.60 2.68 2.76 2.84 2.92 3.00 3.16 3.24 3.32 3.40 3.48 3.64 3.72 3.96 4.28 4.44 4.60 4.92 5.23 5.31 5.39 5.71 5.87 6.51 6.83 7.78
0.601 0.679 0.757 0.836 0.915 0.994 1.073 1.152 1.231 1.310 1.389 1.468 1.548 1.627 1.706 1.785 1.865 1.944 2.024 2.103 2.262 2.341 2.421 2.500 2.580 2.659 2.739 2.898 2.977 3.693 3.136 3.216 3.375 3.454 3.693 4.011 4.170 4.329 4.647 4.965 5.045 5.124 5.442 5.602 6.238 6.556 7.511
1.096 1.214 1.331 1.449 1.567 1.685 1.804 1.922 2.041 2.160 2.278 2.397 2.516 2.635 2.754 2.873 2.992 3.111 3.230 3.349 3.588 3.707 3.826 3.945 4.064 4.183 4.303 4.541 4.660 5.734 4.899 5.018 5.257 5.736 5.734 6.211 6.449 6.688 7.165 7.643 7.762 7.881 8.358 8.597 9.552 10.029 11.461
1.26 1.38 1.50 1.63 1.75 1.87 1.99 2.11 2.23 2.35 2.47 2.59 2.71 2.83 2.95 3.07 3.19 3.31 3.43 3.55 3.79 3.91 4.03 4.15 4.27 4.39 4.51 4.75 4.87 5.95 5.11 5.23 5.47 5.59 5.95 6.43 6.66 6.90 7.38 7.86 7.98 8.10 8.58 8.81 9.77 10.25 11.68
0.896 1.014 1.131 1.249 1.367 1.485 1.604 1.722 1.841 1.960 2.078 2.197 2.316 2.435 2.554 2.673 2.792 2.911 3.030 3.149 3.388 3.507 3.626 3.745 3.864 3.983 4.103 4.341 4.460 5.534 4.699 4.818 5.057 5.176 5.534 6.011 6.249 6.488 6.965 7.443 7.562 7.681 8.158 8.397 9.352 9.829 11.261
1.462 1.618 1.775 1.932 2.089 2.247 2.405 2.563 2.721 2.879 3.038 3.196 3.355 3.513 3.672 3.831 3.989 4.148 4.307 4.466 4.783 4.942 5.101 5.260 5.419 5.578 5.737 6.055 6.214 7.645 6.532 6.691 7.009 7.168 7.645 8.281 8.599 8.917 9.554 10.190 10.349 10.508 11.145 11.463 12.736 13.372 15.281
1.67 1.84 2.00 2.17 2.33 2.49 2.65 2.81 2.98 3.14 3.30 3.46 3.62 3.78 3.94 4.10 4.26 4.42 4.58 4.74 5.06 5.22 5.38 5.54 5.70 5.86 6.02 6.33 6.49 7.93 6.81 6.97 7.29 7.45 7.93 8.57 8.89 9.20 9.84 10.48 10.64 10.80 11.43 11.75 13.03 13.66 15.57
1.149 1.305 1.462 1.619 1.776 1.934 2.092 2.250 2.408 2.566 2.725 2.883 3.042 3.200 3.359 3.518 3.676 3.835 3.994 4.153 4.470 4.629 4.789 4.947 5.106 5.265 5.424 5.742 5.901 7.332 6.219 6.378 6.696 6.855 7.332 7.968 8.286 8.605 9.241 9.877 10.036 10.195 10.832 11.150 12.423 13.059 14.969
1.462 1.618 1.775 1.932 2.089 2.247 2.405 2.563 2.721 2.879 3.038 3.196 3.355 3.513 3.672 3.831 3.989 4.148 4.307 4.466 4.783 4.942 5.101 5.260 5.419 5.578 5.737 6.055 6.214 7.645 6.532 6.691 7.009 7.168 7.645 8.281 8.599 8.917 9.554 10.190 10.349 10.508 11.145 11.463 12.736 13.372 15.281
1.67 1.84 2.00 2.17 2.33 2.49 2.65 2.81 2.98 3.14 3.30 3.46 3.62 3.78 3.94 4.10 4.26 4.42 4.58 4.74 5.06 5.22 5.38 5.54 5.70 5.86 6.02 6.33 6.49 7.93 6.81 6.97 7.29 7.45 7.93 8.57 8.89 9.20 9.84 10.48 10.64 10.80 11.43 11.75 13.03 13.66 15.57
1.156 1.312 1.469 1.626 1.783 1.941 2.099 2.257 2.415 2.573 2.732 2.890 3.049 3.207 3.366 3.525 3.683 3.842 4.001 4.159 4.477 4.636 4.794 4.954 5.113 5.272 5.431 5.749 5.908 7.339 6.226 6.385 6.703 6.862 7.339 7.975 8.294 8.611 9.246 9.883 10.044 10.202 10.840 11.156 12.430 13.067 14.976
Boston Gear 800-825-6544
317
I
Engineering Information Sprocket Diameters for ANSI Standard Series Hubs
No. of Teeth 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 34 35 36 37 38 40 42 44 45 48 49 50 52 54 56 60 64 70 72 76 80 84 90 96
I
318
5/8” Pitch–No. 50 3/4” Pitch–No. 60 1” Pitch–No. 80 .400” Roller Diameter .468” Roller Diameter .625” Roller Diameter Pitch Outside Bottom Pitch Outside Bottom Pitch Outside Bottom Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter 1.87 2.09 1.427 2.193 2.51 1.724 2.924 3.35 2.299 2.023 2.30 1.623 2.427 2.76 1.958 3.236 3.68 2.611 2.218 2.50 1.818 2.662 3.00 2.193 2.549 4.01 2.924 2.415 2.71 2.015 2.898 3.25 2.429 3.864 4.33 3.239 2.612 2.91 2.212 3.134 3.49 2.665 4.179 4.66 3.554 2.809 3.11 2.409 3.371 3.74 2.902 4.494 4.98 3.869 3.006 3.32 2.606 3.607 3.98 3.138 4.180 5.31 4.185 3.204 3.52 2.804 3.844 4.22 3.375 5.126 5.63 4.501 3.401 3.72 3.001 4.082 4.46 3.613 5.442 5.95 4.817 3.599 3.92 3.199 4.319 4.70 3.850 5.759 6.27 5.134 3.797 4.12 3.397 4.557 4.95 4.088 6.076 6.59 5.451 3.995 4.32 3.595 4.794 5.19 4.325 6.393 6.91 5.768 4.193 4.52 3.793 5.032 5.43 4.563 6.710 7.24 6.085 4.392 4.72 3.992 5.270 5.67 4.801 7.027 7.56 6.402 4.590 4.92 4.190 5.508 5.91 5.039 7.344 7.88 6.719 4.788 5.12 4.388 5.746 6.15 5.277 7.661 8.20 7.036 4.987 5.32 4.587 5.984 6.39 5.515 7.979 8.52 7.354 5.185 5.52 4.785 6.222 6.63 5.753 8.296 8.84 7.671 5.582 5.92 5.182 6.699 7.11 6.230 8.931 9.48 8.306 5.979 6.32 5.579 7.175 7.59 6.706 9.567 10.11 8.942 6.376 6.72 5.976 7.652 8.07 7.183 10.202 10.75 9.577 6.774 7.12 6.374 8.128 8.54 7.659 10.838 11.39 10.213 6.972 7.32 6.572 8.367 8.78 7.898 11.156 11.71 10.531 7.171 7.52 6.771 8.605 9.02 8.136 11.474 12.03 10.849 7.370 7.72 6.970 8.844 9.26 8.375 11.792 12.35 11.167 7.569 7.92 7.169 9.082 9.50 8.613 12.110 12.67 11.485 7.966 8.32 7.566 9.559 9.98 9.090 12.746 13.31 12.121 8.363 8.72 7.963 10.036 10.46 9.567 13.382 13.94 12.757 8.761 9.11 8.361 10.513 10.94 10.044 14.018 14.58 13.393 8.960 9.31 8.560 10.752 11.18 10.283 14.336 14.90 13.711 9.556 9.91 9.156 11.467 11.89 10.998 15.290 15.86 14.665 9.755 10.11 9.355 11.706 12.13 11.237 15.608 16.18 14.983 9.954 10.31 9.554 11.945 12.37 11.476 15.926 16.50 15.301 10.351 10.71 9.951 12.422 12.85 11.953 16.562 17.13 15.937 10.749 11.11 10349 12.899 13.33 12.430 17.198 17.77 16.573 11.147 11.50 10.747 13.376 13.81 12.907 17.835 18.41 17.210 11.942 12.30 11.542 13.330 14.76 13.861 19.107 19.68 18.482 12.738 13.10 12.338 15.285 15.72 14.816 20.380 20.96 19.755 13.931 14.29 13.531 16.717 17.15 16.248 22.289 22.87 21.664 14.329 14.69 13.929 17.194 17.63 16.725 22.926 23.50 22.301 15.124 15.49 14.724 18.149 18.58 17.680 24.199 24.78 23.574 15.920 16.28 15.520 19.103 19.54 18.634 25.471 26.05 24.846 16.715 17.08 16.315 20.058 20.49 19.589 26.744 27.33 26.119 17.909 18.27 17.509 21.490 21.93 21.021 28.654 29.24 28.029 19.102 19.47 18.702 22.922 23.36 22.453 30.563 31.15 29.938
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Horsepower & Torque Capacity of Shafting
Shaft Horsepower Based on Pure Torsion at 10,000 PSI Maximum Shear Stress 30
50
100
175
690
1150
1750
Torque Capacity (Lb. Ins.) Based on 10,000 PSI Shear Stress
0.049 0.078 0.117 0.166 0.228 0.303 0.394 0.501 0.625 0.769 0.933 1.12 1.32 1.56 1.82 2.11 2.42 2.77 3.15 3.56 4.00 4.48 5.00 5.55 6.15 6.78 7.46 8.18 8.95 9.77 10.6 11.5 12.5 13.5 14.5 15.7 16.8
0.082 0.130 0.194 0.277 0.380 0.506 0.656 0.834 1.04 1.28 1.55 1.86 2.21 2.60 3.03 3.51 4.04 4.62 5.25 5.93 6.67 7.47 8.33 9.26 10.2 11.3 12.4 13.6 14.9 16.2 17.7 19.2 20.8 22.5 24.3 26.1 28.1
0.164 0.261 0.389 0.554 0.760 1.01 1.31 1.66 2.08 2.56 3.11 3.73 4.43 5.21 6.07 7.03 8.08 9.24 10.5 11.8 13.3 14.9 16.6 18.5 20.5 22.6 24.8 27.2 29.8 32.5 35.4 38.4 41.6 45.0 48.6 52.3 56.2
0.287 0.456 0.681 0.969 1.32 1.76 2.29 2.92 3.64 4.48 5.44 6.53 7.75 9.11 10.6 12.3 11.1 16.1 18.3 20.7 23.3 26.1 29.1 32.4 35.8 39.6 43.5 47.7 52.2 56.9 62.0 67.3 72.9 78.8 85.0 91.6 98.4
1.13 1.79 2.68 3.82 5.24 6.97 9.05 11.5 14.3 17.6 21.4 25.7 30.5 35.9 41.9 48.5 55.8 63.7 72.4 81.8 92.1 103.1 115.0 127.8 141.5 156.1 171.7 188.3 206.0 224.7 244.5 265.4 287.6 310.9 335.1 361.2 388.3
1.88 2.99 4.47 6.36 8.73 11.6 15.0 19.1 23.9 29.4 35.7 42.9 50.9 59.9 69.8 80 93 106 120 136 153 171 191 213 235 260 286 313 343 374 407 442 479 518 559 602 647
2.87 4.56 6.80 9.69 13.2 17.6 22.9 29.2 36.4 44.3 54.4 65.3 77.5 91.1 106 123 141 161 183 207 233 261 291 324 358 396 435 477 522 569 620 673 729 788 850 916 984
103 164 245 349 479 637 827 1052 1314 1616 1961 2352 2792 3283 3830 4433 5097 5824 6618 7480 8414 9422 10509 11675 12925 14261 15686 17203 18815 20525 22335 24248 26268 29396 30637 32993 35466
Diameter 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-11/16 1-3/4 1-13/16 1-7/8 1-15/16 2 2-1/16 2-1/8 2-3/16 2-1/4 2-5/16 2-3/8 2-7/16 2-1/2 2-9/16 2-5/8
I
The above table is computed based on a torsional stress of 10,000 PSI. For applications involving bending moments (gears, sprockets, etc.) the horsepower capacity must be reduced accordingly. The stress level of 10,000 PSI is representative of medium carbon steel shafting. For other materials, a correction must be made accordingly.
P-1930-BG
04/10
Boston Gear 800-825-6544
319
Engineering Information Temperature Conversion Table Degrees Celcius “C”; Degrees Fahrenheit “F”
Degree C.
Degree F.
Degree C.
Degree F.
Degree C.
Degree F.
Degree C.
Degree F.
Degree C.
Degree F.
–40 –39 –38 –37 –36
–40.0 –38.2 –36.4 –34.6 –32.8
8 9 10 11 12
46.4 48.2 50.0 51.8 53.6
56 57 58 59 60
132.8 134.6 136.4 138.2 140.0
104 105 106 107 108
219.2 221.0 222.8 224.6 226.4
152 153 154 155 156
305.6 307.4 309.2 311.0 312.8
–35 –34 –33 –32 –31
–31.0 –29.2 –27.4 –25.6 –23.8
13 14 15 16 17
55.4 57.2 59.0 60.8 62.6
61 62 63 64 65
141.8 143.6 145.4 147.2 149.0
109 110 111 112 113
228.2 230.0 231.8 233.6 235.4
157 158 159 160 161
314.6 316.4 318.2 320.0 321.8
–30 –29 –28 –27 –26
–22.0 –20.2 –18.4 –16.6 –14.8
18 19 20 21 22
64.4 66.2 68.0 69.8 71.6
66 67 68 69 70
150.8 152.6 154.4 156.2 158.0
114 115 116 117 118
237.2 239.0 240.8 242.6 244.4
162 163 164 165 166
323.6 325.4 327.2 329.0 330.8
–25 –24 –23 –22 –21
–13.0 –11.2 – 9.4 – 7.6 – 5.8
23 24 25 26 27
73.4 75.2 77.0 78.8 80.6
71 72 73 74 75
159.8 161.6 163.4 165.2 167.0
119 120 121 122 123
246.2 248.0 249.8 251.6 253.4
167 168 169 170 171
332.6 334.4 336.2 338.0 339.8
–20 –19 –18 –17 –16
– – – +
4.0 2.2 0.4 1.4 3.2
28 29 30 31 32
82.4 84.2 86.0 87.8 89.6
76 77 78 79 80
168.8 170.6 172.4 174.2 176.0
124 125 126 127 128
255.2 257.0 258.8 260.6 262.4
172 173 174 175 176
341.6 343.4 345.2 347.0 348.8
–15 –14 –13 –12 –11
5.0 6.8 8.6 10.4 12.2
33 34 35 36 37
91.4 93.2 95.0 96.8 98.6
81 82 83 84 85
177.8 179.6 181.4 183.2 185.0
129 130 131 132 133
264.2 266.0 267.8 269.6 271.4
177 178 179 180 181
350.6 352.4 354.2 356.0 357.8
–10 – 9 – 8 – 7 – 6
14.0 15.8 17.6 19.4 21.2
38 39 40 41 42
100.4 102.2 104.0 105.8 107.6
86 87 88 89 90
186.8 188.6 190.4 192.2 194.0
134 135 136 137 138
273.2 275.0 276.8 278.6 280.4
182 183 184 185 186
359.6 361.4 363.2 365.0 366.8
– – – – –
5 4 3 2 1
23.0 24.8 26.6 28.4 30.2
43 44 45 46 47
109.4 111.2 113.0 114.8 116.6
91 92 93 94 95
195.8 197.6 199.4 201.2 203.0
139 140 141 142 143
282.2 284.0 285.8 287.6 289.4
187 188 189 190 191
368.6 370.4 372.2 374.0 375.8
0 + 1 2 3 4
32.0 33.8 35.6 37.4 39.2
48 49 50 51 52
118.4 120.2 122.0 123.8 125.6
96 97 98 99 100
204.8 206.6 208.4 210.2 212.0
144 145 146 147 148
291.2 293.0 294.8 296.6 298.4
192 193 194 195 196
377.6 379.4 381.2 383.0 384.8
5 6 7
41.0 42.8 44.5
53 54 55
127.4 129.2 131.0
101 102 103
213.8 215.6 217.4
149 150 151
300.2 302.0 303.8
197 198 199
386.6 388.4 390.2
I
320
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Equivalent Table
FRACTION — DECIMAL — MILLIMETER Fraction Inches
Inch Decimal Equivalent
Millimeter Equivalent
Fraction Inches
Inch Decimal Equivalent
Millimeter Equivalent
1/64 1/32 3/64 1/16 5/64 3/32 7/64 1/8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/4 17/64 9/32 19/64 5/16 21/64 11/32 23/64 3/8 25/64 13/32 27/64 7/16 29/64 15/32 31/64 1/2
.0156 .0312 .0469 .0625 .0781 .0937 .1094 .1250 .1406 .1562 .1719 .1875 .2031 .2187 .2344 .2500 .2656 .2812 .2969 .3125 .3281 .3437 .3594 .3750 .3906 .4062 .4219 .4375 .4531 .4687 .4844 .5000
.397 .794 1.191 1.588 1.984 2.381 2.778 3.175 3.572 3.969 4.366 4.763 5.159 5.556 5.953 6.350 6.747 7.144 7.541 7.938 8.334 8.731 9.128 9.525 9.922 10.319 10.716 11.113 11.509 11.906 12.303 12.700
33/64 17/32 35/64 9/16 37/64 19/32 39/64 5/8 41/64 21/32 43/64 11/16 45/64 23/32 47/64 3/4 49/64 25/32 51/64 13/16 53/64 27/32 55/64 7/8 57/64 29/32 59/64 15/16 61/64 31/32 63/64 1
.5156 .5312 .5469 .5625 .5781 .5937 .6094 .6250 .6406 .6562 .6719 .6875 .7031 .7187 .7344 .7500 .7656 .7812 .7969 .8125 .8281 .8437 .8594 .8750 .8906 .9062 .9219 .9375 .9531 .9687 .9844 1.0000
13.097 13.494 13.891 14.288 14.684 15.081 15.478 15.875 16.272 16.669 17.066 17.463 17.859 18.256 18.653 19.050 19.447 19.844 20.241 20.638 21.034 21.431 21.828 22.225 22.622 23.019 23.416 23.813 24.209 24.606 25.003 25.400
MILLIMETER — INCHES Millimeters
Inches
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
.0394 .0787 .1181 .1575 .1968 .2362 .2756 .3150 .3543 .3937 .4331 .4724 .5118 .5512 .5905 .6299 .6693 .7087 .7480 .7874 .8268 .8661 .9055 .9449 .9842 1.0236 1.0630 1.1024 1.1417 1.1811
I
P-1930-BG
04/10
Boston Gear 800-825-6544
321
Engineering Information Metric Conversion Chart
Area
Volume
Multiply
By
Millimeters2 Centimeters2 Meters2 Inches2 Inches2 Feet2 Feet2
.00155 .155 10.76 645.16 6.452 929.03 .0929
To Obtain
Multiply
inches2 inches2 feet2 millimeters2 centimeters2 centimeters2 meters2
Centimeter3 Centimeter3 Liter Liter Liter Inch3 Feet3 Gallon
Density Multiply
By
lg/cm3 lg/cm3 lb/in3 lb/ft3 lb/ft3
lb/in3 lb/in3 gr/cm3 g/cm3 Kg/m3
Power Multiply
Multiply
By
Gram Kilogram Kilogram Ounce Pound
.03527 35.27 2.205 28.35 453.6
.001341 3.967 .33000 746 .2521
To Obtain
Multiply
Horsepower BTW/hour ft-lb/min watts kilocalorie/hour
Newton-meter in-lb
Millimeter Centimeter Meter Inch Feet Feet
I
ounce ounce pounds gram grams
By
To Obtain
.03937 .3937 39.37 2.54 30.48 .3048
inch inch inch centimeter centimeter meter
By 8.84 .113
To Obtain in-lb Newton-meter
Velocity Multiply
Length Multiply
To Obtain
Torque By
Joule/sec Kilocalorie/hour Horsepower Horsepower BTU/hour
To Obtain inches3 fluid ounce inches3 feet3 U.S. gallon centimeter3 liter liter
Weight
To Obtain
.03613 62.43 27.68 .016 16.02
By .0610 .034 61.02 .0353 .264 16.39 28.32 3.785
Centimeter/second Centimeter/second Meter/second Meter/second Meter/second Inch/second Inch/second Foot/second Foot/minute
By .3937 1.969 3.281 196.9 2.237 25.4 2.54 .3048 .00508
To Obtain inches/second feet/minute feet/second feet/minute miles per hour millimeters/second centimeters/second meters/second meters/second
BOSTON GEAR REGISTERED TRADEMARKS BOSTON GEAR® BOSTON® BOStonE® BOST-BRONZ® BEAR-N-BRONZ®
322
Boston Gear 800-825-6544
P-1930-BG
04/10
Engineering Information Application Classification for Various Loads
Type of Machine To Be Driven
AGITATORS Pure Liquid Semi-Liquids, Variable Density BLOWERS Centrifugal and Vane Lobe BREWING AND DISTILLING Bottling Machinery Brew Kettles–Continuous Duty Cookers – Continuous Duty Mash Tubs – Continuous Duty Scale Hopper – Frequent Starts CAN FILLING MACHINES CANE KNIVES CAR DUMPERS CAR PULLERS CLARIFIERS CLASSIFIERS CLAY WORKING MACHINERY Brick Press & Briquette Machine Extruders and Mixers COMPRESSORS Centrifugal Lobe – Reciprocating, Multi-Cycle Reciprocating – Single Cycle CONVEYORS— UNIFORMLY LOADED & FED Apron Assembly-Belt – Bucket or Pan Chain – Flight Oven – Live Roll – Screw CONVEYORS—HEAVY DUTY NOT UNIFORMLY FED Apron Assembly-Belt – Bucket or Pan Chain – Flight Live Roll Oven – Screw Reciprocating – Shaker CRANES AND HOISTS Main Hoists Bridge and Trolley Drive CRUSHER Ore, Stone Sugar
P-1930-BG
04/10
Chart I For All Drives
Chart I For All Drives
Service Factor Loading
Service Factor Loading
Not More Not More Than 15 Than 10 Mins. in Hrs. per 2 Hrs. Day
More Than 10 Hrs. Per Day
0.80 1.00
1.00 1.25
1.25 1.50
0.80 1.00
1.00 1.25
1.25 1.50
0.80 — — — — — — — — — —
1.00 — — — 1.25 1.00 1.50 1.75 1.25 1.00 1.25
1.25 1.25 1.25 1.25 1.50 — — — — 1.25 1.50
— 1.00
1.75 1.25
2.00 1.50
— — —
1.00 1.25 1.75
1.25 1.50 2.00
— — — —
1.00 1.00 1.00 1.25
1.25 1.25 1.25 1.50
— — — — — —
1.25 1.25 1.25 — 1.25 1.75
1.50 1.50 1.50 — 1.50 2.00
*
1.00
1.25
— —
1.75 1.50
2.00 1.50
Type of Machine To Be Driven
Not More Not More Than 15 Than 10 Mins. in Hrs. per 2 Hrs. Day
ELEVATORS Bucket – Uniform Load Bucket – Heavy Load Centrifugal Discharge Freight Gravity Discharge FANS Centrifugal – Light (Small Diam.) Large Industrial FEEDERS Apron – Belt – Screw Disc Reciprocating FOOD INDUSTRY Beet Slicer Cereal Cooker Dough Mixer – Meat Grinder GENERATORS (NOT WELDING) HAMMER MILLS HOISTS Heavy Duty Medium Duty and Skip Type LAUNDRY TUMBLERS LINE SHAFTS Uniform Load Heavy Load MACHINE TOOLS Auxiliary Drive Main Drive – Uniform Load Main Drive – Heavy Duty METAL MILLS Draw Bench Carriers & Main Drive SLITTERS TABLE CONVEYORS — NON REVERSING Group Drives Individual Drives Wiring Drawing, Flattening or Winding MILLS ROTARY TYPE BALL AND ROD Spur Ring Gear and Direct Connected Cement Kilns, Pebble Dryers and Coolers Plain and Wedge Bar Tumbling Barrels
More Than 10 Hrs. Per Day
— — — — —
1.00 1.25 1.25 1.25 1.00
1.25 1.50 1.50 1.50 1.25
— —
1.00 1.25
1.25 1.50
— — —
1.25 1.00 1.75
1.50 1.25 2.00
— — — — —
1.25 1.00 1.25 1.00 1.75
1.50 1.25 1.50 1.25 2.00
— — —
1.75 1.25 1.25
2.00 1.50 1.50
— —
1.00 1.25
1.25 1.50
— — —
1.00 1.25 1.75
1.25 1.50 2.00
— —
1.25 1.25
1.50 1.50
— —
1.25 1.75
1.50 2.00
—
1.25
1.50
— — — — —
— — — — —
2.00 1.50 1.50 1.50 2.00
Boston Gear 800-825-6544
I
323
Engineering Information Application Classification for Various Loads (Continued)
Type of Machine To Be Driven
324
Chart I For All Drives
Service Factor Loading
Service Factor Loading
Not More Not More Than 15 Than 10 Mins. in Hrs. per 2 Hrs. Day
MIXERS Concrete – Continuous Concrete – Intermittent Constant Density Semi-Liquid OIL INDUSTRY Oil Well Pumping Chillers, Paraffin Filter Press Rotary Kilns PAPER MILLS Agitator (Mixer) Agitator – Pure Liquids Barking Drums – Mechanical Barkers Bleacher Beater Calender Heavy Duty Calender Anti-Friction Brgs. Cylinders Chipper Chip Feeder Coating Rolls – Couch Rolls Conveyors – Chips – Bark – Chemical Conveyors – Log and Slab Cutter Cylinder Molds, Dryers (Anti-Friction Brg.) Felt Stretcher Screens – Chip and Rotary Thickener (AC) Washer (AC) Winder – Surface Type PLASTICS INDUSTRY Intensive Internal Mixers Batch Type Continuous Type Batch Drop Mill – 2 Rolls Compounding Mills Calenders Extruder – Variable Speed Extruder – Fixed Speed PULLERS Barge Haul
I
Chart I For All Drives
Boston Gear 800-825-6544
More Than 10 Hrs. Per Day
— — — —
1.25 1.25 1.00 1.25
1.50 1.50 1.25 1.50
— — —
— 1.25 1.25
* 1.50 1.50
— —
1.25 1.00
1.50 1.25
— — — — — — — — —
1.75 1.00 1.25 — 1.00 1.25 — 1.25 1.00
2.00 1.25 1.50 2.00 1.25 1.50 2.00 1.50 1.25
— — —
1.00 — —
1.25 2.00 2.00
— — — — — —
— 1.25 1.25 1.25 1.25 —
1.25 1.50 1.50 1.50 1.50 1.25
— — — — — — —
— — — — — — —
1.75 2.00 1.25 1.25 1.50 1.50 1.75
—
—
2.00
Type of Machine To Be Driven
PUMPS Centrifugal Proportioning Reciprocating Single Acting, 3 or more Cycles Double Acting, 2 or more Cycles Rotary – Gear or Lube RUBBER INDUSTRY Batch Mixers Continuous Mixers Calenders Extruders – Continuous Extruders – Intermittent Tire Building Machines Tire & Tube Press Openers SEWAGE DISPOSAL EQUIPMENT Bar Screens Chemical Feeders Collectors Dewatering Screws Scum Breakers Slow or Rapid Mixers Thickeners Vacuum Filters SCREENS Air Washing Rotary – Stone or Gravel Traveling Water Intake SKIP HOISTS SLAB PUSHERS STOKERS TEXTILE INDUSTRY Batchers or Calenders Cards Card Machines Dry Cans and Dryers Dyeing Machines Looms Mangles, Nappers and Pads Soapers, Tenner Frames Spinners, Washers, Winders TUMBLING BARRELS WINDLASS
Not More Not More Than 15 Than 10 Mins. in Hrs. per 2 Hrs. Day
More Than 10 Hrs. Per Day
— —
— —
1.25 1.50
—
1.25
1.50
— —
1.25 1.00
1.50 1.25
— — — — — — —
— — — — — — —
1.75 1.50 1.50 1.50 1.75 — —
— — — — — — — —
1.00 1.00 1.00 1.25 1.25 1.25 1.25 1.25
1.25 1.25 1.25 1.50 1.50 1.50 1.50 1.50
— — — — — —
1.00 1.25 1.00 — 1.25 —
1.25 1.50 1.25 — 1.50 1.25
— — — — — — — — — 1.50 —
1.25 1.25 1.75 1.25 1.25 1.25 1.25 1.25 1.25 1.75 1.25
1.50 1.50 2.00 1.50 1.50 1.50 1.50 1.50 1.50 2.00 1.50
P-1930-BG
04/10
Index to Catalog Numbers Catalog Number
Description
Page No.
0-B(L)G* 0-H(U)G* 06000 06724* 1 (A. AA)
Chain Tensioners Chain Tensioners Gear Gauge Set Thrust Washers Ladder Chains
294 296 62 118 254
2 (1/2) 2S(S)C12* 2S(S)C25* 3A-1/2* 3A-1/2 B&C*
Ladder Chains Clamp Collars Clamp Collars Adj. Shaft Supports Replacement Bearings
254
3F(T)-1/2* 3H(L)-1/2* 3M035060* 5M064150* 5R21-16S*
Flange Cartridges Pillow Blocks Timing Belts Timing Belts Coupling Sleeve Stock
8P40AF(D,GS)-1/4* 12EMAF(D,GS)* 15BP(SS)7* 25A(B)9* 25B9SS*
Catalog Number
Description
BG11-1-3-3* BG47-2-2* BL423*
Shaft Couplings Shaft Couplings Leaf Chains
Page No. 103 103 253
C C1-6* C2040HP* CA7* CA(S)C18* CB1(A)6*
Ladder Chain Sprockets Roller Chain Ladder Chain Sprockets Clamp Collars Ladder Chain Sprockets
292 252 291 116 291
225 218 124 130
CB3-10* CB816* CBT60* CD1142* CFHD(L)-3*
Lader Chain Sprockets Bost-Bronz Cored Bars Chain Breakers Worm Gears Rod Ends
292 144 256 89 200
Roll End Bearings Roll End Bearings Roller Chain Sprockets Roller Chain Sprockets Roller Chain Sprockets
166 162 266 267 268
CG1042* CMHD(L)-3* CQ1342* CR4* CS(S)C10-32* CSC12*
Worm Gears Rod Ends Worm Gears Shaft Couplings Clamp Collars Clamp Collars
89 200 89 105 115 116
35A(B)8* 35B9SS* 35B12T1-8* 40A(B)9* 40B10SS*
Roller Chain Sprockets Roller Chain Sprockets Idler Sprockets Roller Chain Sprockets Roller Chain Sprockets
269 271 293 274 278
40HP* 41A(B)22* 50A(B)8* 5(6)0-BG* 60A(B)8*
Roller Chain Roller Chain Sprockets Roller Chain Sprockets Chain Tensioners Roller Chain Sprockets
252 272 279 295 283
60H* 80A(B)8* 601* 622AF(D,GS)-1/8* 1602DC(DS)*
Roller Chain Roller Chain Sprockets Ball Bearings Roll End Bearings Ball Bearings
245 287 194 162 185
3002DC(DS)* 7508DL(DLG)* 7610DL(DLG)* 11722* 18510*
Ball Bearings Ball Bearings Ball Bearings Shaft Couplings & Inserts Steel Bushings
190 187 188 102 119
18800* 31300(4)
Steel Washers* Bear-N-Bronz Banks
118 154
117 231 213
A A(AA1)* AF1012-6* AO1*
Roller Chain Attachments Bostone Bearings Ball Bearings
251 161 193
B B24-1* B503* BBB-1 BF7-3/8-3/8*
Bost-Bronz Bearings Block Chains Bost-Bronz Bank Shaft Couplings
138 253 154 102
D D1 D35B16* D40B13* D50B15* D60B15*
Roller Chain Attachments Roller Chain Sprockets Roller Chain Sprockets Roller Chain Sprockets Roller Chain Sprockets
251 271 278 282 286
D(B)620A* D(B)860A* D1080A D1118* D1126*
Worm Gears Worm Gears Worm Gear Worm Gears Worm Gears
93 92 91 86 87
D1134* D1142* D1260A* D(B)1400* D1407K
Worm Gears Worm Gears Worm Gears Worm Gears Worm
88 89 90 90 90
D(B)1410* D1418K* D1418-10 D(B)1420A* D(B)1427K*
Worm Gears Worms Bostone Bearing Worm Gears Worms
91 91 161 92 92
D(B)1430A* D1438(K)* D(B)1600* D(B)1610* D(B)1620A*
Worm Gears Worms Worm Gears Worm Gears Worm Gears
93 93 90 91 92
D(B)1630A* DH1407* DH1418* DH1438* DSH-1
Worm Gears Worms Worms Worms Worm
93 90 91 93 86
I
*Initial number, larger numbers arranged according to size. P-1930-BG
04/10
Boston Gear 800-825-6544
325
Index to Catalog Numbers Catalog Number
Description
DTH-1 DUH DVH-1 DH1427*
Worm Worm Worm Worms
Page No.
Catalog Number
Description
87 88 89 92
GDUH GDVH-1 GF20* GFB10A GH20*
Worm Worm Change Gears Compound Bushing Change Gears
88 89 31 31 32
F F7612B* FA5-3/16-3/16* FB25-2* FC12-3/8* FC12-SOLID*
Ball Bearing Insert Shaft Coupling Bost-Bronz Flanged Brgs. Shaft Coupling Shaft Coupling
169 105 141 100 101
GH1056 GH1066 GH1076 GH1086 GHB8A
Worm Worm Worm Worm Compound Bushing
90 91 92 93 32
FCP21-1/8* FH547* FP35-2*
Shaft Coupling Roll End Adaptors Bostone Flanged Brgs.
106 169 156
GLSH-1 GLTH-1 GLUH GLVH-1 GP579-1*
Worm Worm Worm Worm Racks
86 87 88 89 35
G
I
Page No.
G(S)24* G96* G182* G226* G460Y*
Pinion Wire Spur Gears Spur Gears Spur Gears Miter Gears
34 18 19 21 70
GP1018(-1/8)* GP1026(-3/16)* GP1034(-3/16)* GP1616Y* GP2424Y*
Worm Gears Worm Gears Worm Gears Miter Gears Miter Gears
86 87 88 71 70
G478Y-G* G632* G(B)850* G1018* G1026*
Bevel Gears Internal Gears Worm Gears Worm Gears Worm Gears
74 36 92 86 87
GQSH-1 GQTH-1 GQUH GQVH-1 GS48-7*
Worm Worm Worm Worm Bostone Bearings
86 87 88 89 161
G1034* G1042* G(B)1050A* G(B)1060A* G1066K
Worm Gears Worm Gears Worm Gears Worm Gears Worm
88 89 90 91 91
GSS460Y* GSS479Y*
Miter Gears Bevel Gears
70 74
G(B)1070* G1076K G(B)1077* G1086K G(B)1100*
Worm Gears Worm Worm Gears Worm Worm Gears
92 92 93 93 94
H608L(R)* H917 H1008L(R)* H1056* H1066*
Helical Gears Block Chain Sprockets Helical Gears Worms Worms
65 290 64 90 91
G1106KL(R) G1110* G1116K G1202* G(B)1260
Worm Worm Gears Worm Grooved Pulley Worm Gear
94 95 95 120 90
H1076* H1086* H1106 H1116 H1427L(R)
Worms Worms Worm Worm Worms
92 93 94 95 92
G1616GS-1/2 G(B)8100* GA20* GAB20A GB20*
Guide Roll Bearing Worm Gears Change Gears Compound Bushing Change Gears
170 92 28 28 29
H2412* H3216* HB612L(R)* HDSH-1 HDTH-1
Spur Gears Spur Gears Helical Gears Worm Worm
20 19 65 86 87
GBB16A* GD20A* GDB12A GDSH-1 GDTH-1
Compound Bushing Change Gears Compound Bushing Worm Worm
29 30 30 86 87
HDUH HDVH-1 HF(L)-3* HF(L)-3C* HF(L)-4CG*
Worm Worm Rod Ends Rod Ends Rod Ends
88 89 201 199 199
G1202*
Pulleys
120
HF(L)-4G* HF(L)E-3* HFX(L)-4G*
Rod Ends Rod Ends Rod Ends
201 202 203
H
*Initial number, larger numbers arranged according to size. 326
Boston Gear 800-825-6544
P-1930-BG
04/10
Index to Catalog Numbers Catalog Number
Description
Page No.
HL146Y-G* HL147Y-G* HL153Y-G* HL156Y-G
Bevel Gears Bevel Gears Bevel Gears Bevel Gears
75 74 76 77
HL1056* HL1066* HL1076* HL1086* HL1106
Worms Worms Worms Worms Worm
90 91 92 93 94
HL1116 HLK101Y* HLK105Y* HLSH-1 HLSK101Y*
Worm Miter Gears Miter Gears Worm Spiral Miter Gears
95 71 72 86 73
HLTH-1 HLUH HLVH-1 HM(L)-3* HM(L)-3C*
Worm Worm Worm Rod Ends Rod Ends
87 88 89 201 199
HM(L)-4CG* HM(L)-4G* HM(L)E-3* HMX(L)-4G* HP1106
Rod Ends Rod Ends Rod Ends Rod Ends Worm
199 201 202 203 94
HQSH-1 HQTH-1 HQUH HQVH-1 HS608L(R)*
Worm Worm Worm Worm Helical Gears
86 87 88 89 65
J J37(A)* J37(B)* J37(B)-01* JP(D)25-1/8* JPE37-1/8*
Universal Joints Universal Joints Universal Joint Parts Universal Joints Universal Joints
108 108 108 112 113
JS37(B)*
Universal Joints
108
K K(KK)1(2) KF(L)-3
Chain Attachments Rod Ends
251 198
L L93Y* L99Y* L105Y* L146Y-G* L147Y-G*
Miter Gears Miter Gears Miter Gears Bevel Gears Bevel Gears
70 71 72 75 74
L153Y-G* L156Y-G* L204-4* L501-2* L1056*
Bevel Gears Bevel Gears Racks Racks Worms
76 77 47 35 90
Catalog Number
Description
Page No.
L1066* L1076 L1086* L1106 L1116
Worms Worm Worms Worm Worm
91 92 93 94 95
L1427 L1438 LHA(B,SS)2* LHSSE(VV)2* LS3*
Worm Worm Spherical Bearings Spherical Bearings Spherical Bearings
92 93 204 205 206
LSA101Y* LSH(P) LTHB(P) LUHB(P) LVHB-1
Spiral Miter Gears Worms Worms Worms Worm
73 86 87 88 89
M1(35) M35(2) M35-4* MB-1-7/16* MBF-1-7/16*
Chain Attachments Chain Attachments Bear-N-Bronz Bearings Pillow Blocks Flanged Cartridges
251 251 146 222 229
MBP-1-7/16* MCB816* MM1(35) MM1(35)(-2) MS8*
Piloted Flanges Bear-N-Bronz Cored Bars Chain Attachments Chain Attachments Bear-N-Bronz Solid Bars
230 151 251 251 153
M
N N6906(B)* NA11B(-5/16)* NAR5* NB11B(-3/8)* NBG15-1/2*
Ball Bearings Spur Gears Steel Stem Pinions Spur Gears Replacement Bearings
189 20 33 21 214
ND11B(-1/2)* NF11B(-5/8)* NF35-2-1/2 NH11B(-3/4)* NJ11B(-1)*
Spur Gears Spur Gears Bostone Flanged Bearing Spur Gears Spur Gears
22 23 172 24 25
NK11B* NL11B* NO11B* NR2000* NR2105*
Spur Gears Spur Gears Spur Gears Ball Bearing Sheaves Ball Bearing Sheaves
26 27 27 195 196
NR2201* NS35-2-1/2* NT312* NX3008-(LC,M)*
Ball Bearing Wheels Bostone Bearings Bostone Bearings Replacement Bearings
197 172 173 213
I
O OA424Y*
Miter Gears
72
*Initial number, larger numbers arranged according to size. P-1930-BG
04/10
Boston Gear 800-825-6544
327
Index to Catalog Numbers Catalog Number
Description
Page No.
P P24-2* P1250-2* PA528Y-G(P)* PA3212Y-G(P)* PA3316Y-G(P)*
Boston F-1 Bearings Nylon Cable Pulleys Bevel Gears Bevel Gears Bevel Gears
156 173 77 76 75
PA3010(D,N)F060* PA3010(D,N)F090* PA5012(D,N)F090* PA5012(D,N)F150* PB5602*
Timing Belt Pulleys Timing Belt Pulleys Timing Belt Pulleys Timing Belt Pulleys Bost-Bronz Plates
125 126 131 132 143
PL3010(D,S)F090* PL5011(D,S)F090* PLB3010(D,S)F090* PLB3032(D,S)F090* PLB5011(D,S)F090*
Timing Belt Pulleys Timing Belt Pulleys Timing Belt Pulleys Timing Belt Pulleys Timing Belt Pulleys
127 133 128 129 134
PPB4-1/4* PS-1/2* PS(2,3)-1/2*
Pillow Blocks Pillow Blocks Flanged Cartridges
215 216 223
Catalog Number
Description
S(S)C12* SCC1/4-1/4* SF(T)-1/2* SH(L)-1/2* SH(S)82-G(P)*
Setscrew Collars Shaft Couplings Flanged Cartridges Pillow Blocks Spiral Bevel Gears
114 104 227 220 78
SP4* SRP-1/4* SS4 SS82-G(P)*
Bostone F-1 Solid Bars Pillow Blocks Bostone Stub Shaft Spiral Bevel Gears
157 215 171 78
T TB47* TH35-60* TP410* TU816-6*
Bost-Bronz Thrust Brg. Chain Pullers Bostone Thrust Bearings Take-Up Frames
UB37* UJ(L,S)10(S,H)* UJN(L,S)10-10* UJ(L,S)(C,D)
Universal Joint Boot Kits Universal Joint Yokes Universal Joints Universal Joint Center Kits
I
Worm Gears Worm Gears Worm Gears Worm Gears Worm Gears
93 92 91 90 86
Q1326* Q1334* Q1342* QB(H)16* QB616*
Worm Gears Worm Gears Worm Gears Spur Gears Worm Gears
87 88 89 22 93
QB808* QB1016* QB1212* QD(H)15* QFH15*
Worm Gears Worm Gears Worm Gears Spur Gears Spur Gears
92 91 90 23 23
QHH16* QSH-1 QTH-1 QUH QVH-1
Spur Gears Worm Worm Worm Worm
24 86 87 88 89
R R700(D,GS)* RFP46-4 RP46-2 RSP8
Bostone Bearing Rulon Flange Bearings Rulon Sleeve Bearings Rulon Solid Bar
170 159 159 159
S S2412* S3216* SA01* SB4* SC4
Spur Gears Spur Gears Ball Bearings Bost-Bronz Solid Bars Bostone Shaft Clip
20 19 193 144 171
143 256 157 232
U
Q Q620A* Q860A Q1080A Q1260A Q1318*
Page No.
108 111 110 111
W WA(1,2) WK(1,2) WM(1,2,35,35-2)
Chain Attachments Chain Attachments Chain Attachments
251 251 251
X X5R21-16 XCBT60-5* XFC(A,BB,R)12* XFCP21-1/8* XL-1/2* XL(2,3)-1/2*
Shaft Coupling Part Chain Breaker Tips Shaft Coupling Part Shaft Coupling Part Pillow Blocks Flanged Cartridges
106 256 101 106 217 224
Y Y2412* Y3212* Y4812* Y6416* YA12(-5/16)*
Spur Gears Spur Gears Spur Gears Spur Gears Spur Gears
42 40 39 37 42
YB12(-3/8)* YD12(-1/2)* YF12(-5/8)* YH12(-3/4)* YI2436*
Spur Gears Spur Gears Spur Gears Spur Gears Internal Gears
43 43 44 45 48
YJ12(-1)* YK12* YP2412* YP3212* YP4818*
Spur Gears Spur Gears Spur Gears Spur Gears Spur Gears
45 46 41 39 37
YP4844* YPB2412* YPB3212* YPB4818*
Spur Gears Spur Gears Spur Gears Spur Gears
38 41 40 38
*Initial number, larger numbers arranged according to size. 328
Boston Gear 800-825-6544
P-1483-BG
10/09
Altra Industrial Motion
Boston Gear Boston Gear is a global supplier of quality power transmission products to most major industrial markets. With unparalleled delivery programs and superior customer service, the power transmission consumer, distributor and OEMs who demand the best, count on Boston Gear. Boston Gear provides an extensive off-the-shelf product offering of more than 20,000 products combined with the ability to custom engineer unique solutions when required. Products are designed to perform in an unlimited array of industrial applications from unit handling to food processing and everything in between including solutions for paper converting, corrugated, mixers, hoists, pumps and steel.
Altra is a leading multinational designer, producer and marketer of a wide range of mechanical power transmission products. We sell our products in over 70 countries throughout the world.
Boston Gear Boston Gear is a leading global supplier of quality power transmission products to most major industrial markets including food processing, packaging machinery, material handling and many others. Along with unparalleled delivery programs and superior customer service, the power transmission consumer, distributor, and OEM who demand the best, count on Boston Gear.
Centric Products Mechanical & Pneumatic Overload Clutches The full family of Centric overload clutches includes Trig-O-Matic™, Trig-O-Matic Lite™, Model H units, pneumatic disconnect models, and VariTorque pneumatic models. Centric centrifugal clutches are also offered. Bore ranges from 1/2" to 4-11/16". Torque ranges from 35 in.lb. to 88,500 in.lb.
Our products are frequently used in critical applications, such as fail-safe brakes for elevators, wheelchairs and forklifts as well as in a wide range of highvolume manufacturing processes, where reliability and accuracy are important for both avoiding costly downtime and enhancing the overall efficiency of manufacturing operations.
See Catalog P-1500-BG
Altra products are marketed under a variety of well recognized and established manufacturing brand names including Warner Electric, Boston Gear, TB Wood’s, and Formsprag Clutch. High Precision Planetary Gearheads The Boston Gear line of servo gearheads has been designed for direct attachment to popular servomotors. In-line and right angle units are offered in a variety of single and double reduction ratios. See Catalog P-1603-BG
Worm, Helical and Bevel Gear Drives Boston Gear’s comprehensive line of enclosed gear drives includes worm, in-line and parallel-shaft helical, miter, and spiral bevel. Flanged and non-flanged models, single and double reduction units, and right 90 drives are available. And with our Reducer Express™ service, we'll ship any of our 15 million different speed reducer combinations, in stock or not, by air within 24 hours - or we'll pay the freight.
bostongear.com
See Catalog P-1485-BG
Check out BostSpec2™, the online product configurator at bostongear.com. Just input your application’s requirements using the drop down menus to identify performance criteria. The right product will power its way up to the top. • Download 2D and 3D CAD formats and dimensional line drawings. • Submit an online RFQ to the local distributor of your choice. P-1930-BG
4 /10
Boston Gear 800-825-6544
225
Altra Industrial Motion
A L T R A
I N D U S T R I A L
M O T I O N
All Customer Service phone numbers shown in bold Engineered Couplings
Heavy Duty Clutches and Brakes
Asia Pacific Sales Offices
Warner Electric
Ameridrives Couplings
Wichita Clutch
Australia
Electromagnetic Clutches and Brakes
Mill Spindles, Ameriflex, Ameridisc
Pneumatic Clutches and Brakes
New Hartford, CT - USA 1-800-825-6544
Erie, PA - USA 1-814-480-5000
For application assistance: 1-800-825-9050
Gear Couplings
Wichita Falls, TX - USA 1-800-964-3262 Bedford, England +44 (0) 1234 350311
Unit 51/9, Hoyle Avenue Castle Hill, NSW 2154 +61 2 9894 0133 +61 2 9894 0368 (Fax)
St Barthelemy d’Anjou, France +33 (0) 2 41 21 24 24
San Marcos, TX - USA 1-512-353-4000
Precision Electric Coils and Electromagnetic Clutches and Brakes
Bibby Transmissions
Columbia City, IN - USA 1-260-244-6183
Dewsbury, England +44 (0) 1924 460801 Boksburg, South Africa +27 11 918 4270
Matrix International Electromagnetic Clutches and Brakes, Pressure Operated Clutches and Brakes
Brechin, Scotland +44 (0) 1356 602000 New Hartford, CT - USA 1-800-825-6544 Inertia Dynamics Spring Set Brakes; Power On and Wrap Spring Clutch/Brakes
New Hartford, CT - USA 1-800-800-6445 Overrunning Clutches
Formsprag Clutch Overrunning Clutches and Holdbacks
Warren, MI - USA 1-800-348-0881– Press #1 For application assistance: 1-800-348-0881 – Press #2
Marland Clutch Roller Ramp and Sprag Type Overrunning Clutches and Backstops
Burr Ridge, IL - USA 1-800-216-3515 Stieber Clutch Overrunning Clutches and Holdbacks
Heidelberg, Germany +49 (0) 6221 30 47 0
Disc, Gear, Grid Couplings, Overload Clutches
TB Wood’s
www.warnerelectric.com.au
China - Hong Kong
Twiflex Limited
Room 304A, 3rd Floor Join-In Hang Sing Centre 71-75 Container Port Rd. Kwai Chung, Hong Kong +852 2615 9313 +852 2615 9162 (Fax)
Caliper Brakes and Thrusters
Twickenham, England +44 (0) 20 8894 1161 Industrial Clutch
www.warnerelectric.com.hk
Pneumatic and Oil Immersed Clutches and Brakes
China - Shanghai
Waukesha, WI - USA 1-262-547-3357
Shanghai Universal Mansion Suite 703, 168 Yuyuan Road, Shanghai 200040 +86 21 5169-9255 +86 21 6248 5387 (Fax)
Elastomeric Couplings
Chambersburg, PA - USA 1-888-829-6637– Press #5 For application assistance: 1-888-829-6637 – Press #7
General Purpose Disc Couplings
San Marcos, TX - USA 1-512-353-4000 Ameridrives Power Transmission Universal Joints, Drive Shafts, Mill Gear Couplings
Green Bay, WI - USA 1-920-593-2444
Gearing
Boston Gear
www.altramotion.com.cn
Enclosed and Open Gearing, Electrical and Mechanical P.T. Components
China - Taiwan
3rd Fl., No. 35, Lane 32 Kwang-Fu, South Road 10562 Taipei +886 2 2577 8156 +886 2 2570 6358 (Fax)
Charlotte, NC - USA 1-800-825-6544 For application assistance: 1-800-816-5608
www.warnerelectric.com.tw
Nuttall Gear and Delroyd Worm Gear
Singapore
Worm Gear and Helical Speed Reducers
39 Benoi Road Singapore 627725 +65 6487 4464 +65 6487 6674 (Fax)
Niagara Falls, NY - USA 1-716-298-4100
Huco Dynatork
www.warnerelectric.com.sg
Precision Couplings and Air Motors
Belted Drives and Sheaves
Hertford, England +44 (0) 1992 501900 Charlotte, NC - USA 1-800-825-6544
TB Wood’s
Thailand Belted Drives
Chambersburg, PA - USA 1-888-829-6637 – Press #5
Linear Products
For application assistance: 1-888-829-6637 – Press #7
Warner Linear
Engineered Bearing Assemblies
Linear Actuators and Guideways
Belvidere, IL - USA 1-800-825-6544 For application assistance: 1-800-825-9050
178 Soi Anamai Srinakarin Rd., Suanluang Bangkok 10250 +66 2 322 5527 +66 2 320 2380 (Fax) www.warnerelectric.co.th For more information, or to contact authorized agents in Japan, Korea, India, or elsewhere in Asia Pacific, send an email to:
[email protected]
Kilian Manufacturing Engineered Bearing Assemblies
Syracuse, NY - USA 1-315-432-0700
St Barthelemy d’Anjou, France +33 (0) 2 41 21 24 24
www.bostongear.com 701 Carrier Drive Charlotte, NC 28216 - USA 704-588-5610 Fax: 704-588-7181
P-1930-BG
4 /10
Printed in USA
BOSTON GEAR Gears, Bearings, Couplings and Shaft Accessories
Electromagnetic Clutches and Brakes
Rotary Drive Products Gears, Bearings, Couplings and Shaft Accessories
